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oconmngi-2383
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xevyo
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/home/sid/tuning/finetune/backend/output/xevyo-bas /home/sid/tuning/finetune/backend/output/xevyo-base-v1/merged_fp16_hf...
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fast living
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fast living slow aging
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“The human body is not built for an unlimited life “The human body is not built for an unlimited lifespan. Yet there are many ways in which we can improve and prolong our health. ‘Fast Living, Slow Ageing’ is all about embracing those opportunities.” Robin Holliday, author of ‘Understanding Ageing’ and ‘Ageing: The Paradox of Life’
“Today in Australia, we eat too much and move too little. But it is our future that will carry the cost. Our current ‘fast’ lifestyles will have their greatest impact on our prospects for healthy ageing. This book highlights many of the opportunities we all have to make a diference to our outlook, at a personal and social level.” Professor Stephen Leeder, AO, Director of the Menzies Centre for Health Policy, which leads policy analysis of healthcare
“Healthy ageing can’t be found in a single supplement, diet or lifestyle change. It takes an integrated approach across a number of key areas that complement to slowly build and maintain our health. ‘Fast Living, Slow Ageing’ shows how it is possible to practically develop these kind of holistic techniques and take control of our future.” Professor Marc Cohen, MBBS (Hons), PhD (TCM), PhD (Elec Eng), BMed Sci (Hons), FAMAC, FICAE, Professor, founder of www.thebigwell.com “SLOW is about discovering that everything we do has a knock-on efect, that even our smallest choices can reshape the big picture. Understanding this can help us live more healthily, more fully and maybe even longer too.” Carl Honoré, author of ‘In Praise of Slow’
“We all know about the dangers of fast food. But food is not the only fast thing that is ruining our lives. Slow ageing is about inding important connections in the diet and lifestyle choices we make every day and embracing the possibilities for making real changes - to our own lives - in our own way.” Sally Errey, best-selling author of the cookbook ‘Staying Alive!’ “Ageing is a complex process with many diferent factors combining to determine health and longevity. To slow ageing optimally, we also need to combine a range of lifestyle changes, supplements and other activities. This practical book steers us through the many opportunities we have to change our futures for the better.” Prof Brian J Morris, PhD, DSc, Professor of Molecular Medical Sciences, Basic & Clinical Genomics Laboratory, University of Sydney
‘Fast Living, Slow Ageing’ delivers a combination of well researched strategies from both Western medicine and complementary therapies to enhance your wellness.” Dr Danika Fietz, MBBS, BN (Hons), GP Registrar
“Forget the plastic surgeons, Botox and makeovers! ‘Slow ageing’ is really about the practical choices we make every day to stay healthy, it and vital, to look great and to feel great today and in the years ahead.” Dr David Tye, GP, Kingston Family Clinic, South Brighton, SA
“We all hope that growing old will be part of our lives, although we don’t really want to think about it. In fact, ‘old’ is almost a dirty word in lots of people’s minds! ‘Fast Living, Slow Ageing’ takes you down the path of doing something about how you age, while at the same time providing you with choices and igniting an awareness to start now and take control of how you can age with grace.” Ms Robyn Ewart, businesswoman, mum and household manager
TESTIMONIALS
• 4
FAST LIVING SLOW AGEING
“Ageing is a natural and beautiful process which, all too often, we accelerate through unhealt...
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/home/sid/tuning/finetune/backend/output/xevyo-bas /home/sid/tuning/finetune/backend/output/xevyo-base-v1/merged_fp16_hf...
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Future-Proofing the life
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Future-Proofing the Longevity
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This document is published by the World Economic F This document is published by the World Economic Forum as a contribution to a project, insight area or interaction. The findings, interpretations and conclusions expressed herein are the result of a collaborative process facilitated and endorsed by the World Economic Forum but whose results do not necessarily represent the views of the World Economic Forum, nor the entirety of its Members, Partners or other stakeholders. In this paper, many areas of innovation have been highlighted with the potential to support the longevity economy transition. The fact that a particular company or product is highlighted in this paper does not represent an endorsement or recommendation on behalf of the World
Haleh Nazeri Lead, Longevity Economy, World Economic Forum
Graham Pearce Senior Partner, Global Defined Benefit Segment Leader, Mercer
The world appears increasingly fragmented, but one universal reality connects us all – ageing. Across the world, people are living longer than past generations, in some cases by up to 20 years. This longevity shift, coupled with declining birth rates, is reshaping economies, workforces and financial systems, with profound implications for individuals, businesses and governments alike.
As countries transform, the systems that underpin them must also evolve. Today’s reality includes a widening gap between healthspan and lifespan, the emergence of a multigenerational workforce with five generations working side by side, and the need for stronger intergenerational collaboration.
One of the most important topics to consider during this demographic transition is the economic implications of longer lives. This paper highlights five key trends that will influence and shape the financial resilience of institutions, governments
and individuals in the years ahead. It also showcases innovative solutions that are already being implemented by countries, businesses and organizations to prepare for the future.
While the challenges are significant, they also present an opportunity to develop systems that are more inclusive, equitable, resilient and sustainable for the long term. This is a chance to strengthen pension systems and social protections, not only for those who have traditionally benefited, but also for those who were left out of social contracts the first time.
We are grateful to our multistake holder consortium of leaders across business, the public sector, civil society and academia for their contributions, inputs and collaboration on this report. We look forward to seeing how others will continue to build on these innovative ideas to future-proof the longevity economy for a brighter and more ...
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7b2a2799-a74e-4dd4-93a8-4bbabe61ca47
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vtciomis-0967
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xevyo
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Diet-dependent entropic a
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Diet-dependent entropic assessment of athletes’
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Cennet Yildiz1, Melek Ece Öngel2 , Bayram Yilmaz3 Cennet Yildiz1, Melek Ece Öngel2 , Bayram Yilmaz3 and Mustafa Özilgen1* 1Department of Food Engineering, Yeditepe University, Kayısdagi, Atasehir, Istanbul 34755, Turkey 2Nutrition and Dietetics Department, Yeditepe University, Kayısdagi, Atasehir, Istanbul 34755, Turkey 3Faculty of Medicine, Department of Physiology, Yeditepe University, Istanbul, Turkey
(Received 29 July 2021 – Final revision received 26 August 2021 – Accepted 26 August 2021)
Journal of Nutritional Science (2021), vol. 10, e83, page 1 of 8 doi:10.1017/jns.2021.78
Abstract Life expectancies of the athletes depend on the sports they are doing. The entropic age concept, which was found successful in the previous nutrition studies, will be employed to assess the relation between the athletes’ longevity and nutrition. Depending on their caloric needs, diets are designed for each group of athletes based on the most recent guidelines while they are pursuing their careers and for the post-retirement period, and then the metabolic entropy generation was worked out for each group. Their expected lifespans, based on attaining the lifespan entropy limit, were calculated. Thermodynamic assessment appeared to be in agreement with the observations. There may be a significant improvement in the athletes’ longevity if theyshift to a retirement diet after the age of 50. The expected average longevity for male athletes was 56 years for cyclists, 66 years for weightlifters, 75 years for rugby players and 92 years for golfers. If they should start consuming the retirement diet after 50 years of age, the longevity of the cyclists may increase for 7 years, and those of weightlifters, rugby players and golfers may increase for 22, 30 and 8 years, respectively.
Key words: Athletes’ diet: Athletes’ longevity: Entropic age: Lifespan entropy
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rnpjngdh-0387
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xevyo
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/home/sid/tuning/finetune/backend/output/xevyo-bas /home/sid/tuning/finetune/backend/output/xevyo-base-v1/merged_fp16_hf...
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LONGEVITY PAY AND BONUS
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LONGEVITY PAY AND BONUS AWARDS
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Longevity Pay and Bonus Awards (Procedure No. 433) Longevity Pay and Bonus Awards (Procedure No. 433) is a two-page county policy that outlines the rules, eligibility conditions, and payment structures for two distinct types of longevity compensation available to county employees: Longevity Pay Steps and the Longevity Bonus Award. Effective October 2014, the procedure establishes how long-serving employees progress through special pay steps or receive percentage-based bonus payments tied to years of continuous county service.
1. Longevity Pay Steps
Eligibility
Employees qualify for longevity pay steps when they have:
Completed five consecutive years in the same classification,
Served satisfactorily at the maximum pay step of their salary range.
Upon meeting these criteria, an employee may advance to:
Longevity Step 1 (L1) → the next pay step above the maximum.
After continuing in L1 with satisfactory service, the employee may advance to:
Longevity Step 2 (L2) → an additional above-range pay step.
Exceptions
Employees not eligible for longevity pay steps include those:
Whose classifications use pay ranges without steps, or
Who are paid a flat hourly rate.
Collective bargaining agreements may override or modify these provisions.
2. Longevity Bonus Award
The Longevity Bonus Award is a percentage-based annual bonus paid to full-time employees after many years of continuous service.
Eligibility
Applies to full-time employees with statuses AA, AB, AC, AF, AH, AI, AJ, or AT.
Begins after 15 years of continuous county service.
Bonus is issued during the pay period in which the employee’s leave anniversary date occurs.
Bonus Amount
The annual bonus is the greater of $350 or the specified percentage of pay:
Years of Service Bonus %
15 1.5%
16 1.6%
17 1.7%
18 1.8%
19 1.9%
20 2.0%
21 2.1%
22 2.2%
23 2.3%
24 2.4%
25 2.5%
26 2.6%
27 2.7%
28 2.8%
29 2.9%
30+ 3.0%
Payment Rules
Bonus is issued automatically each year in a separate check.
Continues annually as long as service remains continuous.
Employees who experience separation—resignation, retirement, dismissal, or other termination—must restart the entire eligibility period if re-employed.
Impact of Leave
Periods in non-pay status (unpaid leave, unpaid sick/annual leave, layoff) are subtracted from the total service used to determine eligibility.
Exception: Military-leave absences do not reduce service credit.
3. Administrative Information
The policy concludes with contact information for:
Human Resources – Payroll & Information Management
Human Resources – Labor Management and Compensation
Reference documents include:
Administrative Order 7-10 (Supplemental Longevity Payment Policy)
Applicable Collective Bargaining Agreements
County Pay Plan
Overall Summary
Procedure 433 establishes a clear framework for rewarding long-term public service through:
Longevity Pay Steps for stability and tenure within the same classification, and
Longevity Bonus Awards that grow progressively from 15 to 30+ years of continuous county employment.
Together, these programs recognize institutional knowledge, workforce retention, and long-term commitment to county service.
If you'd like, I can also create:
✅ a short executive summary
✅ a comparison with all other longevity-pay documents you provided
✅ a consolidated master-summary of all 19 longevity files
Just tell me!
Sources
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7a453b4c-8cda-4d13-a11a-ee3df9e1f243
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8684964a-bab1-4235-93a8-5fd5e24a1d0a
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dutcyoah-2300
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xevyo
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/home/sid/tuning/finetune/backend/output/xevyo-bas /home/sid/tuning/finetune/backend/output/xevyo-base-v1/merged_fp16_hf...
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Extreme longevity
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Extreme longevity in proteinaceous deep-sea corals
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This study investigates the extreme longevity, gro This study investigates the extreme longevity, growth rates, and ecological significance of two proteinaceous deep-sea coral species, Gerardia sp. and Leiopathes sp., found in deep waters around Hawai’i and other global locations. Using radiocarbon dating and stable isotope analyses, the research reveals that these corals exhibit remarkably slow growth and lifespans extending thousands of years, far surpassing previous estimates. These findings have profound implications for deep-sea coral ecology, conservation, and fisheries management.
Key Insights
Deep-sea corals Gerardia sp. and Leiopathes sp. grow exceptionally slowly, with radial growth rates ranging from 4 to 85 µm per year.
Individual colonies can live for hundreds to several thousand years, with the oldest Gerardia specimen aged at 2,742 years and the oldest Leiopathes specimen at 4,265 years, making Leiopathes the oldest known skeletal accreting marine organism.
The corals feed primarily on freshly exported particulate organic matter (POM) from surface waters, as indicated by stable carbon (δ13C) and nitrogen (δ15N) isotope data.
Radiocarbon analyses confirm the skeletal carbon originates from modern surface-water carbon sources, indicating minimal incorporation of old, “14C-free” carbon into the skeleton.
These slow growth rates and extreme longevities imply that deep-sea coral habitats are vulnerable to damage and slow to recover, challenging assumptions about their renewability.
Deep-sea coral communities are critical habitat hotspots for various fish and invertebrates, contributing to deep-sea biodiversity and ecosystem complexity.
Human impacts such as commercial harvesting for jewelry, deep-water fishing, and bottom trawling pose significant threats to these fragile ecosystems.
The study emphasizes the need for international, ecosystem-based conservation strategies and suggests current fisheries management frameworks may underestimate the vulnerability of these corals.
Background and Context
Deep-sea corals colonize hard substrates on seamounts and continental margins at depths of 300 to 3,000 meters worldwide. These corals form complex habitats that support high biodiversity and serve as important ecological refuges and feeding grounds for various marine species, including commercially valuable fish and endangered marine mammals like the Hawaiian monk seal.
Prior estimates of deep-sea coral longevity were inconsistent, ranging from decades (based on amino acid racemization and growth-band counts) to over a thousand years (based on radiocarbon dating). This study clarifies these discrepancies by:
Applying high-resolution radiocarbon dating to both living and subfossil coral specimens.
Using stable isotope analysis to identify coral carbon sources and trophic levels.
Comparing radiocarbon signatures in coral tissues and skeletons with surface-water carbon histories.
Methods Overview
Samples of Gerardia and Leiopathes were collected from several deep-sea coral beds around Hawai’i (Makapuu, Lanikai, Keahole Point, and Cross Seamount) using the NOAA/Hawaiian Undersea Research Laboratory’s Pisces submersibles.
Coral skeletons were sectioned radially, and microtome slicing was used to obtain thin layers (~100 µm) for precise radiocarbon analysis.
Radiocarbon (14C) ages were calibrated to calendar years using established reservoir age corrections.
Stable isotope analyses (δ13C and δ15N) were conducted on dried polyp tissues to determine trophic level and carbon sources.
Growth rates were calculated from radiocarbon profiles and bomb-pulse 14C signatures (the increase in atmospheric 14C from nuclear testing in the 1950s-60s).
Detailed Findings
Growth Rates and Longevity
Species Radial Growth Rate (µm/year) Maximum Individual Longevity (years)
Gerardia sp. Average 36 ± 20 (range 11-85) Up to 2,742
Leiopathes sp. Approximately 5 Up to 4,265
Gerardia growth rates vary widely but average around 36 µm/year.
Leiopathes grows more slowly (~5 µm/year) but lives longer.
Some Leiopathes specimens show faster initial growth (~13 µm/year) that slows with age.
Carbon Sources and Trophic Ecology
δ13C values for living polyp tissues of both species average around –19.3‰ (Gerardia) and –19.7‰ (Leiopathes), consistent with marine particulate organic carbon.
δ15N values are enriched relative to surface POM, averaging 8.3‰ (Gerardia) and 9.3‰ (Leiopathes), indicating they are low-order consumers, feeding primarily on freshly exported surface-derived POM.
Proteinaceous skeleton δ13C is slightly enriched (~3‰) compared to tissues, likely due to lipid exclusion in skeletal formation.
Radiocarbon profiles of coral skeletons closely match surface-water 14C histories, including bomb-pulse signals, confirming rapid transport of surface carbon to depth and minimal incorporation of old sedimentary carbon.
Ecological and Conservation Implications
The extreme longevity and slow growth of these corals imply that population recovery from physical disturbance (e.g., fishing gear, harvesting) takes centuries to millennia.
Deep-sea coral beds function as keystone habitats, enhancing biodiversity and providing essential fish habitat, including for endangered species.
Physical disturbances like bottom trawling, line entanglement, and coral harvesting for jewelry threaten these corals and their associated communities.
Existing fisheries management may overestimate sustainable harvest limits, especially for Gerardia, due to underestimating longevity and growth rates.
The United States Magnuson-Stevens Fishery Conservation and Management Act (MSA) recognizes deep-sea corals as “essential fish habitat,” but enforcement and protection vary.
The study advocates for international, ecosystem-based management approaches that consider both surface ocean changes (e.g., climate change, ocean acidification) and deep-sea impacts.
The longevity data suggest that damage to these corals should not be considered temporary on human timescales, underscoring the need for precautionary management.
Timeline Table: Key Chronological Events (Related to Coral Growth and Study)
Event/Measurement Description
~4,265 years ago (calibrated 14C age) Oldest Leiopathes specimen basal attachment age
~2,742 years ago (calibrated 14C age) Oldest Gerardia specimen age
1957 Reference year for bomb-pulse 14C calibration in radiocarbon dating
2004 Sample collection year from Hawai’ian deep-sea coral beds
2006/2007 Magnuson-Stevens Act reauthorization increasing protection for deep-sea coral habitats
Present (2008-2009) Publication and review of this study
Quantitative Data Summary: Isotopic Composition of Coral Tissues and POM
Parameter Gerardia sp. (n=10) Leiopathes sp. (n=2) Hawaiian POM at 150 m (Station ALOHA)
δ13C (‰) –19.3 ± 0.8 –19.7 ± 0.3 –21 ± 1
δ15N (‰) 8.3 ± 0.3 9.3 ± 0.6 2 to 4 (range)
C:N Ratio 3.3 ± 0.3 5.1 ± 0.1 Not specified
Core Concepts
Radiocarbon dating (14C) enables precise age determination of coral skeletons by comparing measured 14C levels to known atmospheric and oceanic 14C histories.
Bomb-pulse 14C is a distinct marker from nuclear testing that provides a temporal reference point for recent growth.
Stable isotope ratios (δ13C and δ15N) provide insights into trophic ecology and carbon sources.
Radial growth rates measure the increase in coral skeleton thickness per year, reflecting growth speed.
Longevity estimates derive from radiocarbon age calibrations of inner and outer skeletal layers.
Deep-sea coral beds are ecosystem engineers, forming complex habitats critical for marine biodiversity.
Conservation challenges arise due to very slow growth and extreme longevity, combined with anthropogenic threats.
Conclusions
Gerardia and Leiopathes deep-sea corals exhibit unprecedented longevity, with lifespans of up to 2,700 and 4,200 years, respectively.
Their slow radial growth rates and feeding on freshly exported surface POM indicate a close ecological coupling between surface ocean productivity and deep-sea benthic communities.
The longevity and slow recovery rates imply that damage to deep-sea coral beds is effectively irreversible on human timescales, demanding precautionary and stringent management.
These species serve as critical habitat-formers in the deep sea, supporting diverse marine life and contributing to ecosystem complexity.
There is an urgent need for international, ecosystem-based conservation strategies to protect these unique and vulnerable communities from fishing impacts, harvesting, and environmental changes.
Current fisheries management frameworks may inadequately reflect the nonrenewable nature of these coral populations and require revision based on these findings.
Keywords
Deep-sea corals
Gerardia sp.
Leiopathes sp.
Radiocarbon dating
Longevity
Radial growth rate
Stable isotopes (δ13C, δ15N)
Particulate organic matter (POM)
Deep-sea biodiversity
Conservation
Fisheries management
Magnuson-Stevens Act
Bomb-pulse 14C
Proteinaceous skeleton
References to Note (from source)
Radiocarbon dating and longevity studies (Roark et al., 2006; Druffel et al., 1995)
Stable isotope methodology and trophic level assessment (DeNiro & Epstein, 1981; Rau, 1982)
Fisheries and habitat conservation frameworks (Magnuson-Stevens Act, 2006/2007 reauthorization)
Ecological significance of deep-sea corals (Freiwald et al., 2004; Parrish et al., 2002)
This comprehensive analysis underscores the exceptional longevity and ecological importance of proteinaceous deep-sea corals, highlighting the need for improved management and protection policies given their vulnerability and slow recovery potential.
Smart Summary
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increasing longevity
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The Effects of increasing longevity
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This research article introduces a new demographic This research article introduces a new demographic method to understand why lifetime risk of disease sometimes increases even when disease incidence is falling. The authors show that as people live longer, more of them survive into the ages where diseases typically occur. This can make the lifetime probability of developing a disease rise, even if age-specific incidence rates are decreasing. The paper proposes a decomposition technique that separates the influence of incidence changes from survival (longevity) changes, allowing researchers to determine what truly drives shifts in lifetime disease risk.
Using Swedish registry data, the authors apply their method to three conditions in men aged 60+:
Myocardial infarction (heart attack)
Hip fracture
Colorectal cancer
The analysis reveals how increasing longevity can hide improvements in disease prevention by pulling more people into higher-risk age ranges.
⭐ MAIN FINDINGS
⭐ 1. Lifetime risk is affected by two forces
The authors show that changes in lifetime disease risk come from:
Changing incidence (how many people get the disease at each age)
Changing survival (how many people live long enough to be at risk)
Their method cleanly separates these effects, which had previously been difficult to isolate.
⭐ 2. Longevity increases can mask declining incidence
For diseases that occur mainly at older ages, longer life expectancy creates a larger pool of people who reach the risky ages.
Examples from the study:
✔ Myocardial infarction (heart attack)
Incidence fell over time
But increased longevity created more survivors at risk
Net result: lifetime risk barely changed
Longevity canceled out the improvements.
✔ Hip fracture
Incidence declined
But longevity increased even more
Net result: lifetime risk increased
Sweden’s aging population drove hip-fracture risk upward despite fewer fractures per age group.
✔ Colorectal cancer
Incidence increased
Longevity had only a small effect (because colorectal cancer occurs earlier in life)
Net result: lifetime risk rose noticeably
Earlier age of onset means longevity plays a smaller role.
⭐ 3. Timing of disease matters
The effect of longevity depends on when a disease tends to occur:
Diseases of older ages (heart attack, hip fracture) are highly influenced by longevity increases.
Diseases that occur earlier (colorectal cancer) are less affected.
This explains why trends in lifetime risk can be misleading without decomposition.
⭐ 4. The method improves accuracy and clarity
The decomposition technique:
prevents false interpretations of rising or falling lifetime risk
quantifies exactly how much of the change is due to survival vs. incidence
avoids reliance on arbitrary standard populations
helps in forecasting healthcare needs
makes cross-country or cross-period comparisons more meaningful
⭐ OVERALL CONCLUSION
The paper concludes that lifetime risk statistics can be distorted by population aging. As life expectancy rises, more people survive to ages when diseases are more common, which can inflate lifetime risk even if actual incidence is improving. The authors’ decomposition method provides a powerful tool to uncover the true drivers behind lifetime risk changes separating improvements in disease prevention from demographic shifts.
This insight is crucial for public health planning, research, and interpreting long-term disease trends in ageing societies....
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impact of life
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The financial impact of longevity risk
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This document is a research-style financial report This document is a research-style financial report examining how longevity risk—the risk that people live longer than expected—affects financial systems, insurers, pension plans, governments, and individuals. It analyzes the economic pressures created when life expectancy outpaces actuarial assumptions and evaluates tools used to manage this risk.
Purpose
To explain:
What longevity risk is
Why it is increasing
Its financial consequences
How public and private institutions can mitigate it
Core Themes and Content
1. Understanding Longevity Risk
The report defines longevity risk as the uncertainty in predicting how long people will live. Even small increases in life expectancy can create large financial liabilities for institutions that promise lifetime income or benefits.
2. Drivers of Longevity Risk
The document highlights factors such as:
Advances in health care and medical technology
Declining mortality rates
Longer retirements due to aging populations
Insufficient updating of actuarial life tables
These trends create an expanding gap between projected and actual benefit costs.
3. Financial Impact on Key Sectors
Pension Funds & Retirement Systems
Underfunding increases when retirees live longer than expected.
Defined-benefit plans face large additional liabilities.
Insurance Companies
Life insurers and annuity providers must increase reserves.
Pricing models become more sensitive to longevity assumptions.
Governments
Public pension systems and social programs experience long-term budget strain.
Longevity improvements can impact fiscal sustainability.
Individuals
Heightened risk of outliving personal savings.
Greater need for planning, annuitization, or long horizon investment strategies.
4. Measuring & Modeling Longevity Risk
The report discusses actuarial tools such as:
Mortality improvement models
Stochastic mortality forecasting
Sensitivity analysis to shifts in survival rates
It also covers how even small deviations in mortality assumptions can compound to large financial imbalances.
5. Managing Longevity Risk
The document reviews strategies including:
Longevity swaps and reinsurance
Annuity products
Pension plan redesign
Policy changes to adjust retirement age or contributions
Improved forecasting models
These tools help institutions transfer, hedge, or better anticipate longevity-driven liabilities....
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Sports Genomics
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Sports Genomics Perspectives
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make the answer with
✔ generate points
✔ create make the answer with
✔ generate points
✔ create topics
✔ write quizzes
✔ build presentations
✔ simplify explanations
✔ prepare summaries
⭐ Universal Description for Automated Topic/Point/Question Generation
Sports Genomics Perspectives is a commentary that explains the current state of sports genomics, a field that studies how genetic variations influence athletic traits, performance capacity, training responses, and injury risk. The article highlights that athletic ability results from the interaction of genes + environment + training, not genetics alone.
It reviews major scientific advances since the 1990s, including discoveries of genes that influence endurance, strength, muscle composition, metabolism, and injury susceptibility. It explains that genetics can account for large parts of physical traits—such as aerobic capacity, anaerobic power, and muscle strength—but cannot fully predict performance because adaptation involves epigenetics, biomechanics, physiology, psychology, and environmental factors.
The document also discusses post-genomic technologies (transcriptomics, proteomics, metabolomics), which reveal how the body responds at the molecular level during training, recovery, and injury. Epigenetics is highlighted as a key mechanism that allows the body to “remember” training adaptations even after detraining.
The article explores practical applications: talent identification, personalized training, nutrition planning, injury prevention, and health improvement. It also addresses ethical concerns such as misuse of genetic information, genetic discrimination, and gene doping. The authors conclude that genetics is a powerful tool but must be used responsibly and combined with good coaching, environment, and training programs.
⭐ This description allows any app to generate:
📌 Topics
• Definition of sports genomics
• Gene–environment interaction in sports
• Genetic influence on strength and endurance
• Epigenetics and training adaptation
• Omics technologies (genomics, proteomics, metabolomics)
• Personalized training programs
• Genetic risks for injury
• Ethical risks: gene doping, misuse of genetic data
📌 Key Points
• Athletic performance is polygenic (many genes).
• Genetics influences but does not determine performance.
• Epigenetic changes store “training memory.”
• Omics tools reveal molecular adaptation to exercise.
• Personalized training and injury prevention benefit from genomics.
• Ethical guidelines are required for safe use.
📌 Quiz-Friendly Structure
(Examples for generators)
• What is sports genomics?
• How does epigenetics influence training response?
• Name two genes linked to performance traits.
• What ethical concerns exist in sports genetics?
• Why are omics methods important for athlete analysis?
📌 Easy Explanation
Sports genomics studies how an athlete’s DNA affects their strength, endurance, speed, and injury risk. It shows how genes and training work together. New molecular tools help scientists understand how the body changes during exercise. This helps coaches create better, personalized training plans—but it must be used ethically.
📌 Presentation-Friendly Summary
This paper explains how sports genomics has grown into a major scientific field. It covers early genetics research, new omics technologies, and the role of epigenetics in athletic adaptation. It discusses how genetic information can improve training, reduce injuries, and identify athlete potential. It also emphasizes the need for ethical oversight, especially regarding gene doping.
then you need to ask
If you want, I can now generate:
📌 A full quiz from this PDF
📌 A full slide presentation outline
📌 20–50 topics
📌 A simple explanation for students
📌 A detailed summary or study guide
Just tell me!...
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RISK OF CHRONIC DISEASES
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RISK OF CHRONIC DISEASES LIMITING LONGEVITY
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. NCDs Are the Main Barrier to Healthy Aging
NC . NCDs Are the Main Barrier to Healthy Aging
NCDs cause 71% of all global deaths each year, with 15 million being premature (ages 30–70)
Risk of chronic disease limitin…
.
Four disease groups (CVD, cancer, diabetes type II, respiratory diseases) account for 77% of disease burden and 86% of premature mortality.
2. Major Lifestyle Risk Factors That Limit Longevity
a) Tobacco Use
Smoking is one of the strongest sources of premature mortality, leading to over 20 types of cancer, CVD, and respiratory illness
Risk of chronic disease limitin…
.
Each year 7 million deaths are caused by direct tobacco use and 1.2 million by second-hand smoke.
Smoking habits are shaped by genetic, environmental, and family influences, and early smoking increases addiction risk.
b) Unhealthy Diet
Poor diet (excessive food intake, processed foods, low fruit/vegetables) combined with low physical activity leads to obesity, a major risk factor for chronic disease.
Diet-related factors caused 11 million global deaths in 2017, mainly from CVD, type II diabetes, and cancer
Risk of chronic disease limitin…
.
c) Alcohol Consumption
Excess alcohol increases risks of liver disease, cancer, and mental health issues.
Alcohol-related harm is disproportionately higher in socially deprived populations (“alcohol harm paradox”)
Risk of chronic disease limitin…
.
d) Psychosocial and Socioeconomic Determinants
Low socioeconomic status, childhood adversity, and living in deprived neighborhoods correlate with higher NCD prevalence and lower life expectancy.
Social inequalities strongly shape health outcomes throughout the life course.
3. Multimorbidity Is Increasing
Many individuals develop multiple chronic conditions at middle age, accelerating decline and shortening lifespan
Risk of chronic disease limitin…
.
4. Public Health Implications
NCDs demand comprehensive strategies, not just individual interventions.
The paper emphasizes the importance of:
Preventive lifestyle changes (diet, activity, smoking cessation)
Socioeconomic policies addressing inequality
Considering the exposome—environmental and lifelong exposures—as a factor in aging.
5. Core Message
Healthy aging is not solely biologically determined; it is shaped by lifelong lifestyle behaviours and social conditions. By targeting risk factors—especially smoking, diet, alcohol, and inequality—societies can greatly improve longevity and reduce chronic disease burden....
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Influence of Adult Food
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Influence of Adult Food on Female Longevity and Re
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This PDF is a scientific study examining how adult This PDF is a scientific study examining how adult diet affects female longevity (lifespan) and reproductive capacity (egg production) in an insect species. The research focuses on understanding how nutritional quality after adulthood influences:
how long females live,
how many eggs they produce, and
how diet shapes the trade-off between survival and reproduction.
The study is part of entomological (insect biology) research and has direct relevance to pest management, ecological modeling, and understanding insect life-history evolution.
📌 Main Objective of the Study
To determine how different adult food sources influence:
Female lifespan
Reproductive output (number of eggs laid)
The timing of reproduction
The balance between survival and reproductive investment
The researchers test whether richer diets increase reproduction at the cost of shorter life—or extend lifespan by improving physiological condition.
🧪 Method Overview
Females were provided different types of adult food, such as:
Carbohydrate-rich diets
Protein-rich diets
Natural food sources (like host plant materials or prey)
Control diets (minimal or no nutrition)
The study measured:
Lifespan (in days)
Pre-oviposition period (time before starting to lay eggs)
Lifetime fecundity (total eggs produced)
Daily egg-laying rate
Survival curves under different diets
🐞 Key Scientific Findings
1. Adult diet has a major impact on female lifespan
Nutrient-rich food significantly increases longevity.
Females deprived of proper adult food show rapid mortality.
2. Reproductive capacity strongly depends on adult nutrition
Well-fed females lay more eggs overall.
Poor diets reduce or completely suppress egg production.
3. There is a diet-driven trade-off between lifespan and reproduction
Some diets maximize egg production but shorten lifespan.
Other diets increase longevity but reduce reproductive output.
Balanced diets support both survival and reproduction.
4. The timing of reproduction shifts with diet
Nutrient-rich females begin egg-laying earlier.
Poorly nourished females delay reproduction—or cannot reproduce at all.
5. Physiological mechanisms
The study suggests that improved adult diet enhances:
Ovary development
Energy allocation to egg maturation
Overall metabolic health
🌱 Biological & Practical Importance
The results show that adult nutrition is a critical determinant of:
Female insect population growth
Pest resurgence potential
Biological control success
Evolution of life-history traits
In applied entomology, understanding these relationships helps predict:
Population dynamics
Reproduction cycles
Control strategy effectiveness
🧾 Overall Conclusion
The PDF concludes that adult food quality strongly influences both survival and reproductive performance in female insects.
Better nutrition leads to:
✔ longer lifespan
✔ higher reproductive capacity
✔ earlier reproduction
✔ stronger fitness overall
The study demonstrates that adult-stage diet is just as important as juvenile diet in shaping insect life-history strategies....
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How not to die ?
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How not to die?
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This PDF is a summary-style medical-nutritional gu This PDF is a summary-style medical-nutritional guide based on Dr. Michael Greger’s bestselling book How Not to Die. It presents the scientific evidence showing how specific foods and lifestyle choices can prevent, treat, and even reverse the leading causes of death. The document is structured around the idea that diet is the strongest tool humans have to improve longevity, reduce disease risk, and strengthen the body’s natural defenses.
At its core, the PDF explains:
Most premature deaths are preventable through daily nutritional and lifestyle changes—especially a whole-food, plant-based diet.
🩺 1. Focus on Preventing the Top Killers
The PDF highlights how dietary patterns influence mortality from diseases such as:
Cardiovascular disease
High blood pressure
Cancer
Diabetes
Respiratory illnesses
Kidney disease
Neurological decline
How not to die - Michael Greger
The message is consistent: nutrition is medicine.
🌱 2. The Power of Whole Plant Foods
The document promotes a diet centered on:
Vegetables
Fruits
Legumes (beans, lentils)
Whole grains
Nuts & seeds
Herbs & spices
These foods contain fiber, antioxidants, phytonutrients, and anti-inflammatory compounds that protect against disease and support longevity.
How not to die - Michael Greger
🍇 3. “Daily Dozen” Longevity Checklist
Dr. Greger’s famous Daily Dozen appears in the text—a list of 12 food groups and habits to include every day.
These typically include:
Beans
Berries
Cruciferous vegetables
Greens
Whole grains
Nuts and seeds
Fruits
Spices (especially turmeric)
Water
Exercise
How not to die - Michael Greger
The Daily Dozen provides a simple, actionable structure for eating to extend lifespan.
❤️ 4. How Diet Reverses Disease
Key mechanisms highlighted:
✔ Reducing inflammation
Plant foods contain anti-inflammatory compounds that lower chronic disease risk.
✔ Improving endothelial (blood vessel) function
Essential for reversing heart disease.
✔ Reducing oxidative stress
Antioxidants in plants help prevent cellular damage and aging.
✔ Balancing blood sugar
Whole foods stabilize insulin and reduce diabetes risk.
✔ Supporting gut microbiome health
Fiber-rich foods promote healthy bacteria that protect longevity.
How not to die - Michael Greger
🚫 5. Foods and Habits Linked to Higher Mortality
The PDF warns against:
Processed meats
Excessive salt
Refined sugar
Ultra-processed foods
Sedentary lifestyle
Smoking
High intake of animal fats
How not to die - Michael Greger
These factors contribute significantly to premature death.
🧪 6. Evidence-Based Approach
Dr. Greger’s work is built on:
Peer-reviewed medical research
Epidemiological data
Clinical trials
Meta-analyses
The PDF reflects this, presenting diet as a scientifically grounded intervention—not a fad or trend.
How not to die - Michael Greger
👨⚕️ 7. Lifestyle as Medicine
Beyond nutrition, the document includes advice on:
Regular physical activity
Stress reduction
Adequate sleep
Social connection
These lifestyle pillars combine with diet to produce a powerful longevity effect.
How not to die - Michael Greger
⭐ Overall Summary
This PDF provides a clear, impactful overview of Dr. Michael Greger’s message: Most deaths from chronic diseases are preventable, and the most effective path to long life is a whole-food, plant-based diet combined with healthy daily habits. The document explains the foods that protect against disease, the biological mechanisms involved, and the lifestyle changes proven to extend lifespan.
How not to die - Michael Greger
If you want, I can also provide:
✅ A 5-line ultra-short summary
✅ A one-paragraph version
✅ A bullet-point cheat sheet
✅ Urdu/Hindi translation
Just tell me!...
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Gene Expression Biomarker
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Gene Expression Biomarkers and Longevity
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Chronological age, a count of how many orbits of t Chronological age, a count of how many orbits of the sun an individual has made as a passenger of planet earth, is a useful but limited proxy of aging processes. Some individuals die of age related diseases in their sixties, while others live to double that age. As a result, a great deal of effort has been put into identifying biomarkers that reflect the underlying biological changes involved in aging. These markers would provide insights into what processes were involved, provide measures of how much biological aging had occurred and provide an outcome measure for monitoring the effects of interventions to slow ageing processes. Our DNA sequence is the fixed reference template from which all our proteins are produced. With the sequencing of the human genome we now have an accurate reference library of gene sequences. The recent development of a new generation of high throughput array technology makes it relatively inexpensive to simultaneously measure a large number of base sequences in DNA (or RNA, the molecule of gene expression). In the last decade, array technologies have supported great progress in identifying common DNA sequence differences (SNPs) that confer risks for age related diseases, and similar approaches are being used to identify variants associated with exceptional longevity [1]. A striking feature of the findings is that the majority of common disease-associated variants are located not in the protein coding sequences of genes, but in regions of the genome that do not produce proteins. This indicates that they may be involved in the regulation of nearby genes, or in the processing of their messages. While DNA holds the static reference sequences for life, an elaborate regulatory system influences whether and in what abundance gene transcripts and proteins are produced. The relative abundance of each tran
script is a good guide to the demand for each protein product in cells (see section 2 below). Thus, by examining gene expression patterns or signatures associated with aging or age related traits we can peer into the underlying production processes at a fundamental level. This approach has already proved successful in clinical applications, for example using gene signatures to classify cancer subtypes [2]. In aging research, recent work conducted in the InCHIANTI cohort has identified gene-expression signatures in peripheral leucocytes linked to several aging phenotypes, including low muscle strength, cognitive impairment, and chronological age itself. In the sections that follow we provide a brief introduction to the underlying processes involved in gene expression, and summarize key work in laboratory models of aging. We then provide an overview of recent work in humans, thus far mostly from studies of circulating white cells.
2 Introducing gene expression
Since the early 1900s a huge worldwide research effort has lead to the discovery and widespread use of genetic science (see the NIH website [3] for a comprehensive review of the history of the subject, and a more detailed description of the transfer of genetic information). The human genome contains the information needed to create every protein used by cells. The information in the DNA is transcribed into an intermediate molecule known as the messenger RNA (mRNA), which is then translated into the sequence of aminoacids (proteins) which ultimately determine the structural and functional characteristics of cells, tissues and organisms (see figure 1 for a summary of the process). RNA is both an intermediate to proteins and a regulatory molecule; therefore the transcriptome (the RNA ∗Address correspondence to Prof. David Melzer, Epidemiology and Public Health Group, Medical School, University of Exeter, Exeter EX1 2LU, UK. E-mail: D.Melzer@exeter.ac.uk
1
2 INTRODUCING GENE EXPRESSION
Figure 1: Representation of the transcription and translation processes from DNA to RNA to Protein — DNA makes RNA makes Protein. This is the central dogma of molecular biology, and describes the transfer of information from DNA (made of four bases; Adenine, Guanine, Cytosine and Thymine) to RNA to Protein (made of up to 20 different amino acids). Machinery known as RNA polymerase carries out transcription, where a single strand of RNA is created that is complementary to the DNA (i.e. the sequence is the same, but inverted although in RNA thymine (T) is replaced by uracil (U)). Not all RNA molecules are messenger RNA (mRNA) molecules: RNA can have regulatory functions (e.g. micro RNAs), and or can be functional themselves, for example in translation transfer RNA (tRNA) molecules have an amino acid bound to one end (the individual components of proteins) and at the other bind to a specific sequence of RNA (a codon again, this is complementary to this original sequence) for instance in the figure a tRNA carrying methionine (Met) can bind to the sequence of RNA, and the ribosome (also in part made of RNA) attaches the amino acids together to form a protein.
production of a particular cell, or sample of cells, at a given time) is of particular interest in determining the underlying molecular mechanisms behind specific traits and phenotypes. Genes are also regulated at the posttranscriptional level, by non-coding RNAs or by posttranslational modifications to the encoded proteins. Transcription is a responsive process (many factors regulate transcription and translation in response to specific intra and extra-cellular signals), and thus the amount of RNA produced varies over time and between cell types and tissues. In addition to the gene and RNA transcript sequences that will determine the final protein sequence (so called exons) there are also intervening sections (the introns) that are removed by a process known as mRNA splicing. While it was once assumed that each gene produced only one protein, it is now
clear that up to 90% of our genes can produce different versions of their protein through varying the number of exons included in the protein, a process called alternative splicing. Alteration in the functional properties of the protein can be introduced by varying which exons are included in the transcript, giving rise to different isoforms of the same gene. Many RNA regulatory factors govern this process, and variations to the DNA sequence can affect the binding of these factors (which can be thousands of base pairs from the gene itself) and alter when, where and for how long a particular transcript is produced. The amount of mRNA produced for a protein is not necessarily directly related to the amount of protein produced or present, as other regulatory processes are involved. The amount of mRNA is broadly indicative of...
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729ee0ee-64f5-4ae5-a8f9-4775f728fea1
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ouycguat-1834
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xevyo
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Evolution of the Value
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Evolution of the Value of Longevity in China
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This study investigates the welfare effects of mor This study investigates the welfare effects of mortality decline and longevity improvement in China over six decades (1952-2012), focusing on the monetary valuation of gains in life expectancy and their role relative to economic growth. Utilizing valuation formulae from the Global Health 2035 report, the authors estimate the value of a statistical life (VSL) and analyze how longevity gains have offset poor economic performance in early periods and contributed to reducing regional welfare disparities more recently.
Key Research Objectives
To quantify the value of mortality decline in China from 1952 to 2012.
To evaluate the welfare impact of longevity improvements relative to GDP per capita growth.
To analyze regional differences in health gains and their implications for welfare inequality.
To provide a methodological framework to calculate the value of mortality decline using age-specific mortality rates and GDP data.
Institutional and Historical Context
Life expectancy at birth in China increased from ~45 years in the early 1950s to over 70 years by 2012, with a particularly rapid rise prior to economic reforms in the late 1970s.
This improvement occurred despite stagnant GDP per capita during the pre-reform period (1950-1980).
Key drivers of longevity gain included:
The establishment of grassroots primary healthcare clinics staffed by “barefoot doctors.”
The Patriot Hygiene Campaign (PHC) in the 1950s, which improved sanitation, vaccination, and eradicated infectious diseases.
A basic health system providing employer-based insurance in urban areas and cooperative medical schemes in rural areas.
Increases in primary and secondary education, which indirectly contributed to mortality reduction.
Methodology
The study uses age-specific mortality rates as a proxy for overall health status, leveraging retrospective mortality data available since the 1950s.
The Value of a Statistical Life (VSL) is monetized using a formula linking VSL to GDP per capita and age-specific life expectancy:
The VSL for a 35-year-old is set at 1.8% of GDP per capita.
The value of a small mortality risk reduction (Standardized Mortality Unit, SMU) varies with age proportional to the years of life lost relative to age 35.
The value of mortality decline between two time points is computed as the integral over age of population density multiplied by age-specific changes in mortality risk and weighted by the value of a SMU.
This approach accounts for population age structure and income levels to estimate monetary benefits of longevity improvements.
Data sources include:
United Nations World Population Prospects for mortality rates and life expectancy.
Official Chinese statistical yearbooks for GDP, health expenditures, and census data.
Provincial data analysis focuses on the period 1981 to 2010, coinciding with China’s market reforms.
Main Findings
Time Series Analysis (1952-2012)
Period GDP per capita Change (RMB, 2012 prices) Life Expectancy Gain (years) Value of Mortality Decline (RMB per capita) Ratio of Mortality Value to GDP Change (excl. health exp.)
1957-1962 -152 -0.29 -126 0.84
1962-1967 3897 12.3 2162 5.72
1972-1977 2813 1.74 344 1.28
1982-1987 18041 1.24 338 0.19
1992-1997 40507 7.39 1360 0.32
2002-2007 102971 1.35 1045 0.11
Longevity gains (value of mortality decline) were especially large during the 1960s, partly compensating for poor or negative GDP growth.
The value of mortality decline relative to GDP per capita growth was much higher before 1978, indicating health improvements contributed significantly to welfare despite stagnant incomes.
Post-1978, rapid economic growth outpaced the value of longevity gains, but the latter remained positive and substantial.
Health expenditure is subtracted from GDP to avoid double counting in welfare calculations.
Regional (Provincial) Analysis (1981-2010)
Province GDP per Capita Change (RMB, 2012 prices) Life Expectancy Gain (years) Value of Mortality Decline (RMB per capita) Ratio of Mortality Value to GDP Change (excl. health exp.)
Xinjiang 22738 17.3 2407 0.58
Yunnan 14449 13.15 1857 0.39
Gansu 14945 9.47 264 0.19
Guizhou 12095 9.19 214 0.20
Hebei 27024 5.72 873 0.11
Guangdong 43086 12.05 358 0.13
Jiangsu 50884 12.04 705 0.14
Inland provinces generally experienced larger longevity gains than coastal provinces, despite coastal regions having significantly higher GDP per capita.
The value of mortality decline relative to income growth was higher in less-developed inland provinces, suggesting health improvements partially mitigate regional welfare inequality.
Contrasting trends:
Coastal provinces: faster economic growth but smaller longevity gains.
Inland provinces: slower income growth but larger health gains.
The diminishing returns to longevity gains at higher life expectancy levels explain part of this pattern.
Economic growth can have negative health externalities (pollution, lifestyle changes), which may counteract potential longevity improvements.
Health Transition and Future Challenges
China’s epidemiological transition is characterized by a shift from infectious diseases to non-communicable diseases (NCDs) such as malignant tumors, cerebrovascular disease, heart disease, and respiratory diseases.
Mortality rates for these major NCDs show a rising trend from 1982 to 2012.
The increasing prevalence of chronic diseases imposes a rising medical cost burden, particularly due to advanced medical technologies and health system limitations.
The Chinese government initiated a major health care reform in 2009 aimed at expanding affordable and equitable coverage.
Although health spending has increased, it remains less than one-third of the U.S. level (as % of GDP), indicating room for further investment and improvement.
Conclusions and Implications
The study finds that sustained longevity improvements have played a crucial role in improving welfare in China, especially before economic reforms.
Health gains have partially compensated for weak economic performance prior to market liberalization.
In the reform era, longevity improvements have contributed to narrowing interregional welfare disparities, benefiting poorer inland provinces more.
The value of mortality decline is a meaningful supplement to GDP per capita as an indicator of welfare.
The authors caution that future longevity gains may face challenges due to rising chronic diseases and escalating medical costs.
The methodology and findings are relevant for other low- and middle-income countries undergoing similar demographic and epidemiological transitions.
Core Concepts and Definitions
Term Definition
Life Expectancy Average number of years a newborn is expected to live under current mortality conditions.
Value of a Statistical Life (VSL) Monetary value individuals place on marginal reductions in mortality risk.
Standardized Mortality Unit (SMU) A change in mortality risk of 1 in 10,000 (10^-4).
Value of a SMU (VSMU) Monetary value of reducing mortality risk by one SMU at a given age.
Full Income GDP per capita adjusted for health improvements, including the value of mortality decline.
Highlights
China’s life expectancy rose dramatically from 45 to over 70 years between 1952 and 2012, despite slow GDP growth before reforms.
The monetary value of mortality decline was often larger than GDP growth prior to 1978, showing health’s central role in welfare.
Inland provinces experienced larger longevity gains than coastal provinces, though coastal areas had higher income growth.
Health improvements have helped reduce interregional welfare inequality in China.
The shift from communicable to non-communicable diseases poses new health and economic challenges.
China’s health system reform in 2009 aims to address rising medical costs and expand coverage.
Limitations and Uncertainties
The study assumes a monotonically declining VSL with age, which simplifies but does not capture the full complexity of age-dependent valuations.
Pre-1978 health expenditure data were back-projected, introducing some uncertainty.
Provincial mortality data are only available for census years, limiting longitudinal granularity.
The analysis does not fully incorporate morbidity or quality-of-life changes beyond mortality.
Future extrapolations are uncertain due to evolving epidemiological and demographic dynamics.
References to Key Literature
Jamison et al. (2013) Global Health 2035 report for VSL valuation framework.
Murphy and Topel (2003, 2006) on economic value of health and longevity.
Nordhaus (2003) on full income including health gains.
Becker et al. (2005) on global inequality incorporating longevity.
Aldy and Viscusi (2007, 2008) on age-specific VSL valuation.
Babiarz et al. (2015) on China’s mortality decline under Mao.
Implications for Policy and Future Research
Policymakers should recognize the economic value of health improvements beyond GDP growth.
Investments in basic healthcare, sanitation, and education were critical for China’s longevity transition and remain relevant for other developing countries.
Addressing the burden of chronic diseases and medical costs requires sustained health system reforms.
Future work should explore full income accounting including quality of life, and analyze health and longevity valuation in other low-income and middle-income countries.
More granular data collection and longitudinal studies would improve understanding of regional and cohort-specific health value dynamics.
This comprehensive study demonstrates how longevity gains represent a critical dimension of welfare, particularly in the context of China’s unique historical, demographic, and economic trajectory. It provides a robust analytical framework integrating epidemiological and economic data to quantify health’s contribution to human welfare.
Smart Summary
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xevyo
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/home/sid/tuning/finetune/backend/output/xevyo-bas /home/sid/tuning/finetune/backend/output/xevyo-base-v1/merged_fp16_hf...
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Integrating Mortality
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Integrating Mortality into Poverty Measurement
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This paper introduces and explains Poverty-Adjuste This paper introduces and explains Poverty-Adjusted Life Expectancy (PALE)—a powerful composite indicator that combines mortality and poverty into a single, more realistic measure of population well-being. Unlike traditional life expectancy, which only counts how long people live, PALE measures how long people live without being trapped in poverty.
Its central message:
A society cannot be considered healthy if its people live long lives in deep poverty.
Therefore, life expectancy must be adjusted downward to reflect the years lost to poverty.
🧩 Core Concepts & Insights
1. Traditional life expectancy is incomplete
Life expectancy ignores:
poverty
inequality
vulnerability
human capability deficits
quality of life
Two countries can have identical life expectancies but dramatically different levels of human hardship. PALE fills this gap.
2. What is PALE?
Poverty-Adjusted Life Expectancy (PALE) =
Life expectancy – years lived in poverty
It measures:
how long people live
and whether those years are lived with basic social and economic security
This turns life expectancy into a social justice indicator, not just a demographic one.
3. How PALE is calculated
The measure combines:
traditional mortality data
poverty headcount ratio
poverty gap (depth of poverty)
distribution of poverty across age groups
It adjusts lifespan by the probability of living one’s years under deprivation, effectively incorporating multidimensional poverty into life expectancy analysis.
4. Why PALE matters
A. It integrates two critical dimensions
Longevity (how long people live)
Economic well-being (whether those years are secure)
B. It reveals hidden inequalities
Countries with:
moderate life expectancy but high poverty
→ show very low PALE.
Countries with:
high life expectancy and low poverty
→ show high PALE, meaning not just long life, but good life.
C. It guides smarter policymaking
PALE shows:
where poverty reduction can immediately improve quality-of-life metrics
whether rising life expectancy is accompanied by rising well-being
which populations are most disadvantaged
5. PALE reframes development success
If life expectancy increases but poverty remains high, true well-being does not improve—PALE captures that disconnect.
Examples:
A country may have LE = 72 years
But if 40% live in poverty, effective PALE may drop to 55–60 years
→ meaning the society delivers far fewer “good-quality” years.
This makes PALE more ethically grounded and policy-relevant than standard life expectancy.
6. Application to global and regional comparisons
The paper demonstrates how PALE can:
compare countries with similar lifespans but different poverty profiles
evaluate long-term development progress
assess inequality across age, gender, geography, and socioeconomic status
It provides a way to quantify the real loss of human potential due to poverty.
🧭 Overall Conclusion
The paper makes a strong argument that traditional life expectancy is an incomplete measure of societal well-being. By adjusting for poverty, PALE reveals a more truthful picture of how long people actually live with dignity, capability, and economic security. It is a tool for:
diagnosing inequality
guiding poverty-reduction policy
reframing development metrics around human dignity
PALE = years of life truly lived, not merely survived....
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mevsetwu-8209
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xevyo
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The Human Longevity Recor
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The Human Longevity Record data
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“The Human Longevity Record May Hold for Decades” “The Human Longevity Record May Hold for Decades” is a rigorous demographic and statistical analysis examining Jeanne Calment’s world-record lifespan of 122.45 years and assessing whether this record reflects a biological limit to human life or simply an extreme but plausible outlier. Using validated international data on supercentenarians (110+ years), the authors build probability models to determine:
How likely Calment’s lifespan was,
How surprising it is that her record still stands, and
When a new longevity record might realistically be set.
The human longevity record may …
Their conclusion is clear:
Jeanne Calment’s record is extraordinary—but entirely possible—and may not be broken until around 2045 or later.
It does not imply a fixed biological upper limit on human lifespan.
Core Insights
1. Calment’s lifespan is rare but statistically plausible
Assuming the best-available estimate that the probability of death after age 110 is roughly 50% per year, the authors calculate:
A person who reaches age 110 has a
17.1% chance of surviving to 122.45.
Out of the 1,049 individuals who reached age 110 before 2017, it is perfectly plausible that one might reach 122.45.
The human longevity record may …
Calment’s age is therefore exceptional, but not biologically “impossible.”
2. It is not surprising that her record still stands
Using data from validated supercentenarian lists (IDL and GRG), the authors estimate:
On the day of her death (1997), there was only a 20.3% chance her record would be broken by 2017.
The human longevity record may …
This means:
There was an 80% chance her record would still stand today—exactly what we observe.
So the absence of a new record does not suggest we are hitting a biological limit.
3. The record is likely to hold until ~2045
Using growth rates in the number of supercentenarians and assuming mortality plateaus at extreme ages, the authors project:
The number of new supercentenarians needed to have a >50% chance of exceeding age 122.45
When those individuals will appear
How long they would need to live to surpass Calment’s age
They estimate:
A new longevity record is unlikely before 2045
provided current mortality patterns hold.
The human longevity record may …
Demographic and Statistical Contributions
1. Mortality Plateaus After Age 110
The study confirms that:
The annual probability of death levels off at ~50% after 110
It does not keep rising exponentially
If mortality did keep rising at normal Gompertz rates (10% increase per year), then Calment’s lifespan would be almost impossible.
But since mortality plateaus, her lifespan fits observed patterns.
The human longevity record may …
2. Extreme-Value Theory Explains Long Record Durations
The authors show that:
Maximum lifespan can remain constant for decades even while average lifespan rises
Long-standing records are normal in extreme-value distributions
Examples:
Delina Filkins’ female record held for 54+ years
Gert Boomgaard’s male record held for 67+ years
The human longevity record may …
Thus, Calment’s long record duration is expected, not anomalous.
3 Key Questions Answered
1. How likely was Calment’s lifespan?
Probability = 17.1% given the number of people reaching 110.
→ Extraordinary but not improbable.
2. How unlikely is it that no one has beaten her record yet?
Probability = 20.3% that the record would have been broken by 2017.
→ Very plausible that it still stands.
3. When will the record likely be broken?
Around 2045 (with wide uncertainty).
→ Her record may last ~56 years—similar to past record durations.
Conclusion
“The Human Longevity Record May Hold for Decades” provides compelling demographic evidence that:
Jeanne Calment’s record is real and statistically plausible
Extreme old-age mortality plateaus, enabling survival into the 120s
The absence of new record-holders is expected—not a sign of a biological limit
The next record may not appear until around 2045
The paper strongly refutes claims that humans are approaching a fixed or imminent maximum lifespan.
Instead, it shows that extreme longevity follows predictable statistical patterns—and Calment’s record fits those patterns perfectly....
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taycgghk-5680
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A mathematical model
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A mathematical model to estimate the seasonal
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Yasuhiro Yamada1,3, Toshiro Yamada 2,4 & Kazu Yasuhiro Yamada1,3, Toshiro Yamada 2,4 & Kazuko Yamada2,4
The longevity of a honeybee colony is far more significant than the lifespan of an individual honeybee, a social insect. the longevity of a honeybee colony is integral to the fate of the colony. We have proposed a new mathematical model to estimate the apparent longevity defined in the upper limit of an integral equation. the apparent longevity can be determined only from the numbers of adult bees and capped brood. By applying the mathematical model to a honeybee colony in Japan, seasonal changes in apparent longevity were estimated in three long-term field experiments. Three apparent longevities showed very similar season-changes to one another, increasing from early autumn, reaching a maximum at the end of overwintering and falling approximately plumb down after overwintering. The influence of measurement errors in the numbers of adult bees and capped brood on the apparent longevity was investigated.
A lifespan of an animal, which is the period of time while an individual is alive, is an important index to evaluate individual activities. In the colony composed of eusocial insects such as honeybees (Apis mellifera) which exhibit age-polyethism, the lifespan of each individual cannot always give an assessment as to the activities of a colony but the longevity of colony could give it more appropriately. The longevity of a colony will have greater significance than the lifespan of each individual of the colony. The life of colony diversely depends on the inborn lifespan of an individual, the labor division distribution ratio of each honeybee performing a particular duty, the natural environment such as the weather, the amount of food, pests and pathogens, the environmental pollution due to pesticides and so on. The honeybee length of life has been observed or estimated before in the four seasons, which have a distinct bimodal distribution in temperature zones. According to previous papers, honeybees live for 2–4 weeks1 and 30–40 days2 in spring, for 1–2 weeks1, 25–30 days2 and 15–38 days3 in summer, for 2–4 weeks1 and 50–60 days2 in autumn, and for 150–200 days3, 253 days2, 270 days4, 304 days5 6–8 months6 and 150–200 days3 in winter, where it has been estimated that the difference of life length among seasons may come from the brood-rearing load imposed on honeybees1 and may mainly come from foraging and brood-rearing activity2. Incidentally, the lifetime of the queen seems to be three to four years (maximum observed nine years). The average length of life of worker bees in laboratory cages was observed to range from 30.5 to 45.5 days7. The study on the influence of altitude on the lifespan of the honeybee has found that the lifespans are 138 days at an altitude of 970 m and 73 days at an altitude of 200 m, respectively8. Many papers have discussed what factors affect the length of life (lifespan, longevity, life expectancy) on a honeybee colony as follows: Proper nutrition may increase the length of life in a honeybee colony. Honeybees taking beebread or diets with date palm pollen (the best source for hypopharyngeal gland development) showed the longest fifty percent lethal time (LT50)9. The examination for the effect of various fat proteins on honeybee longevity have shown that honeybees fed diets of red gum pollen have the longest lifespan but those fed invert sugar have the shortest lifespan10. In the discussion on nutrition-related risks to honey bee colonies such as starvation, monoculture, genetically modified crops and pesticides in pollen and sugar, protein nutrient strongly affects brood production and larval starvation (alone and or in combination with other stresses) can weaken colonies11. And protein content in
1Department of Applied Physics, Graduate School of Engineering, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8656, Japan. 2Graduate School of Natural Science & Technology, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan. 3Present address: Department of Physics, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan. 4Present address: 2-10-15, Teraji, Kanazawa, Ishikawa, 921-8178, Japan. correspondence and requests for materials should be addressed to t.Y. (email: yamatoshikazu0501@yahoo.co.jp)
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Population Aging
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Population Aging and Economic Growth in Asia
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This PDF is a comprehensive academic paper that ex This PDF is a comprehensive academic paper that examines how population aging—the rapid rise in the proportion of the elderly—affects economic growth, labor markets, fiscal stability, and development strategies across Asian countries. It synthesizes empirical research, demographic trends, and regional data to provide a clear picture of one of the most urgent socioeconomic challenges facing Asia.
The document is produced by the Asian Development Bank Institute, contributing to its ongoing research agenda on development, demographic transition, and macroeconomic policy.
🔶 Purpose of the Paper
The paper investigates:
How population aging has emerged in Asia
How it differs among East Asia, Southeast Asia, and South Asia
How aging influences labor supply, productivity, savings behavior, economic growth, and public finances
What policy responses are needed to sustain long-term growth
📌 Major Insights and Findings
1. Asia is Aging Faster Than Any Other Region
The paper highlights that many Asian economies—Japan, Korea, China, Singapore—are aging at unprecedented speed due to:
Falling fertility rates
Rising life expectancy
Declining mortality
Some countries are aging before becoming fully wealthy, creating a development challenge known as “growing old before growing rich.”
2. Aging Alters Economic Growth Patterns
Population aging reshapes economic growth in multiple ways:
a) Shrinking labor force
As the working-age population declines, labor shortages emerge, reducing potential output.
b) Falling productivity growth
Rapid aging may reduce innovation, entrepreneurship, and physical labor capacity.
c) Changing savings–investment dynamics
Older households draw down savings, altering capital supply and long-term investment patterns.
d) Shifts in consumption
Demand moves toward healthcare, pensions, and services for older adults.
The paper explains that these changes may significantly slow GDP growth if no policy adjustments occur.
3. Japan as the Forefront Case
Japan is presented as the most advanced example of population aging:
It has one of the world’s oldest populations
Experiences persistent labor shortages
Faces rising pension and healthcare costs
Has implemented aggressive policies: female labor-force participation, automation, and immigration adjustments
Japan acts as a warning model for the rest of Asia.
4. China’s Demographic Turning Point
China is undergoing one of the fastest aging transitions ever seen:
Effects of the One-Child Policy
Rapidly rising older adult population
Declining workforce
Future strains on social security and healthcare
The paper notes that aging may significantly slow China’s long-term growth trajectory if reforms are not accelerated.
5. Policy Solutions to Sustain Growth
The report proposes a wide range of strategic interventions:
1. Labor Market Reforms
Extend retirement ages
Encourage older-worker employment
Increase female labor-force participation
Introduce selective immigration policies
2. Productivity & Innovation Enhancements
Invest in automation and AI
Improve technology adoption in eldercare and industry
Expand human-capital investments
3. Reforming Fiscal and Welfare Systems
Pension reforms
Healthcare system restructuring
Long-term care financing
Sustainable tax and fiscal-policy frameworks
4. Strengthening Life-Cycle Policies
Support for families and fertility
Better childcare and parental support
Education and lifelong learning
6. Broader Asian Differences
The paper compares aging trajectories across subregions:
East Asia — fastest aging, most severe economic implications
Southeast Asia — moderate pace, still time to prepare
South Asia — younger but expected to age rapidly in coming decades
This diversity means policy responses must be country-specific, not one-size-fits-all.
⭐ Perfect One-Sentence Summary
This PDF provides a rigorous analysis of how Asia’s rapid population aging is reshaping economic growth and public policy, arguing that without bold reforms—especially in labor markets, social security, and productivity—many Asian economies risk long-term economic slowdown....
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gtjuuxmj-3271
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xevyo
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Should longevity swaps
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Should longevity swaps
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xevyo-base-v1
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This IFRS Interpretations Committee staff paper ex This IFRS Interpretations Committee staff paper examines how longevity swaps—contracts that transfer the risk of pension members living longer than expected—should be accounted for within defined benefit pension plans under IAS 19 Employee Benefits. Longevity swaps require the pension plan to make fixed payments while receiving variable payments linked to actual benefit payments to retirees.
The central question is whether these swaps should be:
Measured at fair value as plan assets (View 1), or
Split into a variable “insurance-like” leg and a fixed “premium” leg (View 2), with each measured differently.
View 1: Measure as Plan Assets at Fair Value
Supporters of View 1 argue that the swap is a single derivative contract and should follow the standard IAS 19 treatment of plan assets. They point to IAS 19 paragraphs 8 and 113, and IFRS 13, which require fair value measurement. Paragraph 142 also lists longevity swaps as examples of derivatives that can form part of plan assets. Under this view, the swap is initially recorded at zero (as swaps are usually entered at market value) and remeasured at fair value each period, with changes recorded in other comprehensive income.
View 2: Split the Swap Into Two Legs
Supporters of View 2 argue the swap functions like buying a qualifying insurance policy—except the premium is paid over time. They propose splitting it into:
Variable leg (treated like a qualifying insurance policy under IAS 19.115), measured as the present value of the matching obligations.
Fixed leg (representing premiums), treated either as part of plan assets at fair value or as a financial liability measured at amortized cost.
They also debate how to treat the difference between the variable and fixed legs at inception—either as a profit/loss or as part of remeasurements in OCI.
Findings from Global Outreach
The IFRS staff surveyed standard-setters, regulators, accounting firms, and pension specialists across multiple jurisdictions. They found that:
Longevity swaps are not yet widespread, though more common in the UK.
In jurisdictions where they occur, View 1 is the overwhelmingly predominant practice.
There is minimal diversity in accounting treatment.
Several respondents questioned whether longevity swaps could qualify as insurance contracts (suggesting View 2 lacked a strong basis).
Committee Recommendation
Because longevity swaps are uncommon and existing practice already aligns closely with fair value measurement under IAS 19 and IFRS 13, the Committee concluded that no new interpretation is needed. The issue was not added to the IFRIC agenda, as current guidance is considered sufficient to prevent diversity in practice.
If you want, I can also provide:
✅ A short 3–4 line summary
✅ A student-friendly simplified version
✅ MCQs or quiz questions from this file
Just tell me!...
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6de08c55-9bdd-4fd7-a7a6-b038ed7aca76
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8684964a-bab1-4235-93a8-5fd5e24a1d0a
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nyqlyyen-2541
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xevyo
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/home/sid/tuning/finetune/backend/output/xevyo-bas /home/sid/tuning/finetune/backend/output/xevyo-base-v1/merged_fp16_hf...
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The Impact of Longevity
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The Impact of Longevity Improvements on U.S.
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This PDF is a policy-oriented actuarial and econom This PDF is a policy-oriented actuarial and economic analysis that explains how improvements in U.S. longevity—people living longer than previous generations—affect population size, economic productivity, Social Security, Medicare, government budgets, and overall national well-being. The document uses demographic projections, mortality data, and economic modeling to show how even small improvements in life expectancy significantly change the financial and social landscape of the United States.
Its central message is clear:
Longevity improvements generate substantial economic and societal benefits, but also increase long-term public spending, especially through Social Security and Medicare. Both the benefits and costs must be understood together.
📈 1. What the Document Examines
The paper analyzes:
How rising life expectancy will reshape the U.S. population
The economic value created when people live longer
Increased tax revenues from longer working lives
Higher federal spending resulting from extended retirements
Effects on Social Security, Medicare, and fiscal sustainability
Impact of Longevity improvement…
👥 2. Population & Longevity Trends
The analysis highlights:
The U.S. population is aging as mortality declines.
Even modest improvements in longevity generate large changes in the number of older Americans.
The share of adults over age 65 will continue rising for decades.
Impact of Longevity improvement…
These demographic shifts increase both the economic potential of a healthier older population and the fiscal pressure on entitlement programs.
💵 3. Economic Benefits of Longevity Improvements
Living longer and healthier creates major economic gains:
✔ Increased Labor Supply
Many adults work longer if they remain healthy.
✔ Higher Productivity
Longer education, more experience, and healthier aging improve worker output.
✔ Greater Tax Revenues
Extended working years increase income taxes, payroll taxes, and spending.
✔ Larger Consumer Market
An aging but healthy population boosts demand for goods, services, and innovation.
Impact of Longevity improvement…
🏛 4. Fiscal Costs of Longevity Improvements
The report explains that increased longevity also increases federal spending:
✔ Higher Social Security Outlays
More retirees receiving benefits for more years.
✔ Higher Medicare & Medicaid Costs
Longer lifespans mean longer periods of medical care and long-term care use.
✔ Potential Strain on Disability & Pension Systems
If health improvements do not keep pace with lifespan gains, disability costs may rise.
Impact of Longevity improvement…
⚖️ 5. Net Impact: Benefits vs. Costs
A key conclusion:
Longevity improvements produce very large economic benefits, but public program spending rises as well, requiring policy adjustments.
The document quantifies both sides:
Benefits: trillions of dollars in increased economic value
Costs: higher federal program obligations, especially for the elderly
Impact of Longevity improvement…
The net impact depends on policy choices such as retirement age, health system investment, and how healthspan improves relative to lifespan.
🔮 6. Policy Implications
The PDF suggests that policymakers must prepare for an aging America by:
● Strengthening Social Security solvency
● Reforming Medicare to handle long-term cost growth
● Encouraging longer working lives
● Investing in preventive health and chronic disease management
● Focusing on healthspan, not just lifespan
Impact of Longevity improvement…
If reforms are implemented effectively, longevity improvements can become an economic advantage rather than a fiscal burden.
⭐ Overall Summary
This PDF provides a balanced and research-driven examination of how increasing longevity influences the U.S. economy, government programs, and national finances. It shows that longer lives bring enormous economic value—in productivity, workforce participation, and consumer activity—but also increase federal spending on Social Security and Medicare. The report emphasizes that preparing for an aging population requires proactive adjustments in retirement policy, health care, and fiscal planning....
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6c8d7daf-3e97-449d-a2bd-f47cd08cd953
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8684964a-bab1-4235-93a8-5fd5e24a1d0a
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wufeawwn-9691
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xevyo
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Evaluating the Effect o
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Evaluating the Effect of Project Longevity
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xevyo-base-v1
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This report evaluates the impact of Project Longev This report evaluates the impact of Project Longevity, a focused-deterrence violence-reduction initiative implemented in New Haven, Connecticut, on reducing group-involved shootings and homicides. The program targets violent street groups, delivering a coordinated message that violence will bring swift sanctions while offering social services, support, and incentives for individuals who choose to disengage from violent activity.
The study uses detailed group-level data and statistical modeling to assess changes in violent incidents following the program’s launch. The analysis reveals that Project Longevity significantly reduced group-related shootings and homicides, with estimates indicating reductions of approximately 25–30% after implementation. The results are robust across multiple models and remain consistent after adjusting for group characteristics, prior levels of violence, and time trends.
The report explains that Project Longevity works by mobilizing three key components:
Law enforcement partners, who coordinate enforcement responses to group violence;
Social service providers, who offer job training, counseling, and other support;
Community moral voices, who communicate collective intolerance for violence.
Together, these elements reinforce the central message: violence will no longer be tolerated, but help is available for those willing to change.
The authors conclude that Project Longevity is an effective violence-prevention strategy, demonstrating clear reductions in serious violent crime among the most at-risk populations. The findings support the broader evidence base for focused deterrence strategies and suggest that continued implementation could sustain long-term reductions in group-involved violence.
If you want, I can also provide:
✅ A short 3–4 line summary
✅ A simple student-friendly version
✅ MCQs or quiz questions from this file...
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6bd55f15-d666-4b2a-9254-caf987d39ddc
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8684964a-bab1-4235-93a8-5fd5e24a1d0a
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baubzcil-4146
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xevyo
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/home/sid/tuning/finetune/backend/output/xevyo-bas /home/sid/tuning/finetune/backend/output/xevyo-base-v1/merged_fp16_hf...
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The longevity of space
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The longevity of space maintainers
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xevyo
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xevyo-base-v1
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The Longevity of Space Maintainers: A Retrospectiv The Longevity of Space Maintainers: A Retrospective Study is a detailed 1998 investigation published in Pediatric Dentistry examining how long different types of space maintainers last in real clinical settings and which factors contribute to their success or failure. The study analyzed 301 space maintainers fitted in 141 patients (ages 3.4–22.1 years) at the Leeds Dental Institute between 1991 and 1995, making it one of the most extensive retrospective evaluations of space-maintainer performance to date.
Using life-table survival analysis, the researchers found that space maintainers fail frequently and early, with an overall failure rate of 63% and a median survival time of only 7 months. Failure causes varied but were strongly dominated by loss of cement (36%), followed by breakage (24%), and complete loss of the appliance (9%). Only 8% of appliances were deemed fully successful, and 21% were lost to follow-up.
Key Findings
1. Survival Varies Significantly by Appliance Type
Band and Loop (B&L) appliances exhibited the best longevity, with a median survival of 13 months.
Lower Lingual Holding Arches (LLHAs) performed the worst, lasting only 4 months.
Nance appliances: 6-month median survival.
Removable partial dentures: 9-month median survival.
Unilateral appliances survived more than twice as long as bilateral ones.
2. Unexpected Side-Dominance
Left-side B&L maintainers lasted 16 months, while right-side B&Ls survived only 4 months—a statistically significant difference. The authors suggest possible operator-handedness or chewing-side habits as contributing factors.
3. Failure Patterns and Clinical Implications
Cementation failure—often linked to band adaptation, moisture control, or occlusal stress—was the most common cause.
Mechanical failures (e.g., broken solder joints, wire fractures) accounted for nearly a quarter of failures.
Soft-tissue lesions, impingement, and eruption interference also contributed to early removal.
4. Repairs and Replacements Have Different Longevity
The survival time differed dramatically based on what happened after a failure:
Repaired maintainers: 13.5 months (best outcome)
Remade maintainers: 10 months
New maintainers: 7 months
Recemented maintainers: 4.5 months (worst outcome)
This suggests that cement loss often masks deeper design or construction problems.
5. No Effect from Demographic or Operator Variables
Longevity was not influenced by:
Patient age or gender
Dental arch
Operator experience (postgraduate, undergraduate, faculty)
Adequacy of pretreatment assessment
Design and construction quality were far more important than patient or clinician characteristics.
Conclusions
The study provides several evidence-based conclusions:
High failure rate: 63% of appliances failed—substantially higher than reported in earlier research.
Design matters: B&L maintainers outperform all other designs; LLHAs underperform significantly.
Cement issues dominate: Cement loss is the leading cause of failure.
Reassessment is essential: If a space maintainer fails twice from cement loss, its design and suitability must be reevaluated.
Failure risk increases with repeated refitting: Locations where appliances fail multiple times are likely unsuitable for further space maintenance.
Follow-up frequency should be increased:
Bilateral fixed appliances → every 2 months
Unilateral fixed and removable appliances → every 4 months
Overall Summary
This study is a foundational reference on the real-world durability of space maintainers, revealing that survival times are shorter and failure rates higher than often assumed. It emphasizes the importance of proper appliance selection, meticulous design and fabrication, and vigilant follow-up. Its practical recommendations help clinicians improve outcomes and anticipate common complications in pediatric space maintenance.
If you'd like, I can also prepare:
🔸 a one-page clinical summary
🔸 a comparison with the other dental or longevity studies you’ve uploaded
🔸 a visual chart of survival times across appliance types
Just tell me!
Sources
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6bae65a2-1788-4e37-a147-a84aa3a0173a
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8684964a-bab1-4235-93a8-5fd5e24a1d0a
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xevyo-base-v1
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xevyo
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xevyo
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AI assistant with a single unchangeable identity, AI assistant with a single unchangeable identity, representing the vision, values, and purpose of Dr. Anmol Kapoor....
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Trained incrementally on curated instruction–respo Trained incrementally on curated instruction–response pairs with embedded chain-of-thought data, it maintains logical coherence, contextual awareness, and factual accuracy....
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6aa63705-0e27-4660-b422-8d502320214f
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8684964a-bab1-4235-93a8-5fd5e24a1d0a
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bjfzsdnp-2316
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xevyo
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Population Aging and Live
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Population Aging and Living Arrangements in Asia
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This comprehensive paper examines how Asia’s unpre This comprehensive paper examines how Asia’s unprecedented population aging is transforming family structures, living arrangements, and caregiving systems. With Asia home to 58.5% of the world’s older adults—a number expected to double to 1.3 billion by 2050—the region faces both profound challenges and opportunities. The study synthesizes demographic data, cultural patterns, and policy responses across Asia to explain how families and governments must adapt to a rapidly greying society.
At its core, the paper argues that living arrangements are the foundation of older adults’ well-being in Asia. Because families traditionally provide care, shifts from multigenerational living to living-alone and “network” arrangements directly affect the physical, psychological, and economic security of older people.
🧩 Major Themes & Findings
1. Asia Is Aging Fast—Faster Than Any Other Region
In 2022, 649 million Asians were aged 60+.
By 2050, one in four Asians will be over 60.
The 80+ population is growing the fastest, increasing pressure on care systems.
Population Aging and Living Arr…
Aging is uneven—East Asia is already old, South Asia is aging quickly due to India’s massive population, while Southeast and West Asia are in earlier stages.
2. Traditional Family-Based Care Still Dominates
Across Asia, older adults overwhelmingly rely on family-based care, but the forms are changing:
Co-residence (living with children) remains common.
Living alone is rising, especially among women and the oldest old.
Network model (living independently but near adult children) is expanding.
Population Aging and Living Arr…
These changes stem from:
Urbanization
Smaller family sizes
Migration of adult children
Rising female employment
3. Different Living Arrangement Models Affect Well-Being
The paper identifies three major models:
A. Co-residence Model
Multigenerational living
Provides financial + emotional support
Strengthens intergenerational cooperation
B. Network Model (Near-but-Not-With)
Older adults live independently, children nearby
Balances autonomy with support
Reduces conflict while improving cognitive and emotional health
C. Solitary Model (Living Alone / Institutions)
Higher loneliness, depression, poverty risks
Growing especially in East Asia and urban areas
Population Aging and Living Arr…
4. Country Differences Are Significant
Japan
Highly aged; many one-person older households; strong state systems.
China
Still reliant on children for care; rapid shift toward solitary and network models; rising burden on working families.
India
Low current aging but huge future burden; tradition of sons supporting parents persists but migration increases skipped-generation households.
Indonesia
Multigenerational living strong; gendered caregiving norms (daughters provide more care).
Population Aging and Living Arr…
5. Families Remain the Backbone—But Can’t Handle It Alone
The paper stresses that family caregiving is essential in Asia’s cultural and economic context—but families often lack:
Time
Skills
Financial resources
Proximity (due to migration)
Thus, governments must build a “family+ system” where families lead, supported by:
Communities
NGOs
Local governments
Technology
Population Aging and Living Arr…
🛠️ Policy Directions & Responses
1. Encourage and Support Family Caregiving
Financial incentives for adult children
Flexible work for caregivers
Tax benefits
Public recognition
Population Aging and Living Arr…
2. Build a “Family+” Long-Term Care System
A multi-subject model where:
Families provide core care
Communities supply services
Government supplies insurance, health care, and infrastructure
Technology reduces caregiving burden
3. Strengthen Support for Family Caregivers
Training
Psychological counseling
Respite services
Professional backup support
4. Integrate Technology Into Home-Based Care
Smart aging platforms
Remote monitoring
Assistive devices
Population Aging and Living Arr…
5. Build National Policies Aligned With Development Levels
High-income countries (Japan, Singapore, South Korea):
→ Advanced pensions, LTC systems, and smart technology.
Middle/lower-income countries (China, Indonesia, India):
→ Expanding basic pensions; piloting LTC; early-stage tech adoption.
🌍 Best Practice Case Studies
The paper presents successful models:
China: Community-based, tech-enabled “multiple pillars” home care system.
Japan: Fujisawa Smart Town integrating mobility, wellness, and smart infrastructure.
India: Tata Trusts comprehensive rural elder-care programs.
Indonesia: “Bantu LU” income support + social rehabilitation for older adults.
Population Aging and Living Arr…
🧭 Conclusion
Asia is experiencing the largest and fastest aging transition in human history. As family structures transform, the region must shift from purely family-based care to family-centered but state-supported systems. The future of aging in Asia will depend on:
Strengthening intergenerational ties
Supporting caregivers
Expanding long-term care
Deploying technology
Building culturally appropriate policies
This paper provides an essential blueprint for how Asian societies can protect dignity, well-being, and sustainability in an era of rapid demographic change....
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Living beyond the age of
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Living beyond the age of 100
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⭐ “Living Beyond the Age of 100”
“Living Beyond ⭐ “Living Beyond the Age of 100”
“Living Beyond the Age of 100” is a demographic and scientific analysis written by Jacques Vallin and France Meslé for the French National Institute for Demographic Studies (INED). The paper explores whether modern humans are truly living longer than before, what the real limits of human lifespan may be, and why the number of centenarians (people aged 100+) has exploded in recent decades.
The article separates legend from scientific fact, traces the history of verified extreme old age, explains how and why more people now reach 100, and examines whether the maximum human lifespan is increasing.
⭐ What the Document Explains
⭐ 1. Legends vs. Reality in Extreme Longevity
The paper begins by reviewing ancient stories—such as biblical claims of people living to 900 years—and mythical reports of long-lived populations in places like the Caucasus, Andes, and U.S. Georgia.
These accounts were later proven false due to:
inaccurate birth records
cultural exaggeration
political motives (e.g., Stalin promoting Georgian longevity)
The document clarifies that before the 20th century, living beyond 100 was extremely rare, and most claims were unreliable.
⭐ 2. Verified Cases of Super Longevity
The article highlights Jeanne Calment, who lived to 122 years, the verified oldest human in history.
It explains improvements in record-keeping and scientific validation that allow modern researchers to confirm real ages and reject false claims.
⭐ 3. Indications That Maximum Lifespan Is Increasing
Using long-term data from Sweden and France, the authors show that the maximum age at death has steadily increased over the last 150 years.
Examples from Sweden:
In the mid-1800s, maximum age at death: 100–105 (women), 97–102 (men)
In recent decades: 107–112 (women), 103–109 (men)
This increase has accelerated since the 1970s due to improved survival among the oldest old.
Living beyond the age of 100
⭐ 4. Why Are More People Reaching 100?
The growth in centenarians is not due to biology alone.
Major reasons include:
improved healthcare
dramatic reductions in infant mortality
increased survival past age 60
better living conditions
larger elderly populations
As more people survive to age 90+, the probability rises that some will reach 100, 105, or even 110.
The decline in mortality after age 70 accounts for 95% of the increase in record ages in Sweden.
Living beyond the age of 100
⭐ 5. Is Human Lifespan Limited?
The paper reviews the debate between two scientific groups:
Group A: “Fixed Limit” Theory (Fries, Olshansky)
Human lifespan is biologically capped (around age 85 for average life expectancy).
Rising longevity only reflects improved survival until the fixed limit.
They propose the “rectangularization” of the survival curve—more people reach old age, then die around the same maximum age.
Group B: “Flexible Longevity” Theory (Vaupel, Carey)
Human lifespan is not fixed.
Longevity has increased throughout evolution.
Future humans might live 120–150 years.
Very old-age mortality might even decline, suggesting no clear biological ceiling.
The document does not firmly take sides but shows evidence supporting flexibility.
⭐ 6. Life Expectancy Is Still Rising at Older Ages
Life expectancy at:
70 rose from 7–9 years to 13 years (men) and 17 years (women)
80 and 90 also increased significantly
Even at age 100, life expectancy increased from:
1.3 to 1.9 years (men)
1.6 to 2.1 years (women)
Living beyond the age of 100
This suggests continuous improvement, not stagnation.
⭐ 7. The Centenarian Boom
The number of centenarians is growing explosively:
France had 200 centenarians in 1950
6,840 in 1998
Projected 150,000 by 2050
Living beyond the age of 100
Women dominate this group:
at age 100 → 7 women for every 1 man
at age 104 → 10 women for every 1 man
The paper also introduces the category of “super-centenarians” (110+), now growing due to rising survival at extreme ages.
⭐ Overall Meaning
The document concludes that:
The number of people living beyond 100 has increased dramatically due to demographic changes and better survival among the elderly.
Maximum human lifespan may be slowly increasing.
The idea of a fixed biological limit (around age 85) is likely too pessimistic.
Human longevity is rising faster than expected, and future limits are still unknown.
By 2050, reaching 100 may become relatively common.
The paper ultimately presents longevity as a scientific mystery still unfolding, with modern data supporting the possibility that humans may continue to live longer than ever before....
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Longevity and Hazardous
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Longevity and Hazardous Duty
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This document is an official Operating Policy and This document is an official Operating Policy and Procedure (OP 70.25) from Texas Tech University outlining rules, eligibility, and administrative guidance for Longevity Pay and Hazardous Duty Pay for university employees.
Purpose
To establish and explain the university’s policy for awarding longevity pay and hazardous duty pay in accordance with Texas Government Code.
Key Components of the Policy
1. Longevity Pay
Payment Structure
Eligible employees receive $20 per month for every 2 years of lifetime state service, up to 42 years.
Increases occur every additional 24 months of service.
Eligibility
Employees must:
Be regular full-time, benefits-eligible staff on the first workday of the month.
Not be on leave without pay the first workday of the month.
Have accrued at least 2 years of lifetime state service by the previous month’s end.
Certain administrative academic titles (e.g., deans, vice provosts) are included.
Split appointments within TTU/TTUHSC are combined; split appointments with other Texas agencies are not combined.
Employees paid from faculty salary lines to teach are not eligible.
Student-status positions are not eligible.
Longevity Pay Rules
Not prorated.
Employees who terminate or go on LWOP after the first day of the month still receive the full month's longevity pay.
Paid by the agency employing the individual on the first day of the month.
Longevity pay is not included when calculating:
lump-sum vacation payouts,
vacation/sick leave death benefits.
Eligibility Restrictions Related to Retirement
Retired before June 1, 2005, returned before Sept 1, 2005 → eligible for frozen longevity amount.
Returned after Sept 1, 2005 → not eligible.
Retired on or after June 1, 2005 and receiving an annuity → not eligible.
2. Lifetime Service Credit (Longevity Service Credit)
Employees accrue service credit for:
Any previous Texas state employment (full-time, part-time, temporary, faculty, student, legislative).
Time not accrued for:
Service in public junior colleges or Texas public school systems.
Hazardous duty periods if the employee is receiving hazardous duty pay.
Other rules:
Leave without pay for an entire month → no credit.
LWOP for part of a month → credit allowed if otherwise eligible.
Employees must provide verification of prior state service using inter-agency forms.
3. Longevity Payment Schedule
A structured monthly rate based on total months of state service, starting at:
0–24 months: $0
25–48 months: $20
...increasing in $20 increments every 24 months...
505+ months: $420
(Full table is included in the policy.)
4. Hazardous Duty Pay
Eligibility
Paid to commissioned peace officers performing hazardous duty.
Must have completed 12 months of hazardous-duty service by the previous month’s end.
Payment
$10 per 12-month period of lifetime hazardous duty service.
Part-time employees receive a proportional amount.
If an officer transfers to a non-hazardous-duty role, HDPay stops, and service rolls into longevity credit.
5. Hazardous Duty Service Credit
Based on months served in a hazardous-duty position.
Combined with other state service to determine total service.
Determined as of the last day of the preceding month.
6. Administration
Human Resources is responsible for:
Maintaining service records
Determining eligibility
Processing pay
Correcting administrative errors (retroactive to last legislative change)
Longevity and hazardous duty pay appear separately on earnings statements.
7. Policy Authority & Change Rights
Governed by Texas Government Code:
659.041–659.047 (Longevity Pay)
659.301–659.308 (Hazardous Duty Pay)
Texas Tech reserves the right to amend or rescind the policy at any time.
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ysercdhs-0147
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Longevity Increment
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Longevity Increment
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The Longevity Increment document is an official Ci The Longevity Increment document is an official City policy statement (dated 12/15/1988) that explains how longevity-based salary increases are awarded to eligible municipal employees. It defines what a longevity increment is, who qualifies for it, how it is calculated, and how it should be processed administratively.
Its core purpose is to ensure that employees with many years of continuous City service receive periodic, structured pay increases beyond their normal step progression, as recognition for long-term loyalty and experience.
🧩 Key Elements Explained
1. Definition of Longevity Increment
A longevity increment is a salary increase granted after an employee completes a specified number of years of City service, based on their representative organization (such as C.M.E.A, C.U.B, or M.A.P.S.).
Longevity Increment
It is processed using a signed CHANGE NOTICE (28-1618-5143) once the employee meets all criteria (years of service, time in grade).
2. How the Increase Is Calculated
The increment amount is:
A fixed percentage of the maximum step in the employee’s salary grade
or
A flat salary amount, depending on the employee’s representative organization.
Longevity Increment
To determine the exact value, staff must consult the specific Salary Schedule associated with the employee group.
3. Eligible Service Milestones
Longevity increments are awarded at 10, 15, 20, 25, and 30 years of service.
Longevity Increment
Special rule:
M.A.P.S. employees are not eligible for the 30-year increment.
Their eligibility is also tied to how long they have served beyond the maximum merit step of their salary grade.
4. Effective Date Rules
The effective date for longevity increments follows the same rules and procedures used for other salary changes in City employment.
Longevity Increment
5. Related Policy References
The document links to governing policies:
AM-205-1 – SALARY
AM-290 – SALARY SCHEDULES
Longevity Increment
These provide the broader framework controlling pay structures and increments.
🧭 Summary in One Sentence
The Longevity Increment policy ensures that long-serving City employees receive structured, milestone-based salary increases—based on years of service, salary schedules, and union/organization rules—with standardized administrative procedures for awarding them....
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Gene expression signature
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Gene expression signatures of human cell
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Inge Seim1,2, Siming Ma1 and Vadim N Gladyshev1
D Inge Seim1,2, Siming Ma1 and Vadim N Gladyshev1
Different cell types within the body exhibit substantial variation in the average time they live, ranging from days to the lifetime of the organism. The underlying mechanisms governing the diverse lifespan of different cell types are not well understood. To examine gene expression strategies that support the lifespan of different cell types within the human body, we obtained publicly available RNA-seq data sets and interrogated transcriptomes of 21 somatic cell types and tissues with reported cellular turnover, a bona fide estimate of lifespan, ranging from 2 days (monocytes) to a lifetime (neurons). Exceptionally long-lived neurons presented a gene expression profile of reduced protein metabolism, consistent with neuronal survival and similar to expression patterns induced by longevity interventions such as dietary restriction. Across different cell lineages, we identified a gene expression signature of human cell and tissue turnover. In particular, turnover showed a negative correlation with the energetically costly cell cycle and factors supporting genome stability, concomitant risk factors for aging-associated pathologies. In addition, the expression of p53 was negatively correlated with cellular turnover, suggesting that low p53 activity supports the longevity of post-mitotic cells with inherently low risk of developing cancer. Our results demonstrate the utility of comparative approaches in unveiling gene expression differences among cell lineages with diverse cell turnover within the same organism, providing insights into mechanisms that could regulate cell longevity.
npj Aging and Mechanisms of Disease (2016) 2, 16014; doi:10.1038/npjamd.2016.14; published online 7 July 2016
INTRODUCTION Nature can achieve exceptional organismal longevity, 4100 years in the case of humans. However, there is substantial variation in ‘cellular lifespan’, which can be conceptualized as the turnover of individual cell lineages within an individual organism.1 Turnover is defined as a balance between cell proliferation and death that contributes to cell and tissue homeostasis.2 For example, the integrity of the heart and brain is largely maintained by cells with low turnover/long lifespan, while other organs and tissues, such as the outer layers of the skin and blood cells, rely on high cell turnover/short lifespan.3–5 Variation in cellular lifespan is also evident across lineages derived from the same germ layers formed during embryogenesis. For example, the ectoderm gives rise to both long-lived neurons4,6,7 and short-lived epidermal skin cells.8 Similarly, the mesoderm gives rise to long-lived skeletal muscle4 and heart muscle9 and short-lived monocytes,10,11 while the endoderm is the origin of long-lived thyrocytes (cells of the thyroid gland)12 and short-lived urinary bladder cells.13 How such diverse cell lineage lifespans are supported within a single organism is not clear, but it appears that differentiation shapes lineages through epigenetic changes to establish biological strategies that give rise to lifespans that support the best fitness for cells in their respective niche. As fitness is subject to trade-offs, different cell types will adjust their gene regulatory networks according to their lifespan. We are interested in gene expression signatures that support diverse biological strategies to achieve longevity. Prior work on species longevity can help inform strategies for tackling this research question. Species longevity is a product of evolution and is largely shaped by genetic and environmental factors.14 Comparative transcriptome
studies of long-lived and short-lived mammals, and analyses that examined the longevity trait across a large group of mammals (tissue-by-tissue surveys, focusing on brain, liver and kidney), have revealed candidate longevity-associated processes.15,16 They provide gene expression signatures of longevity across mammals and may inform on interventions that mimic these changes, thereby potentially extending lifespan. It then follows that, in principle, comparative analyses of different cell types and tissues of a single organism may similarly reveal lifespan-promoting genes and pathways. Such analyses across cell types would be conceptually similar, yet orthogonal, to the analysis across species. Publicly available transcriptome data sets (for example, RNA-seq) generated by consortia, such as the Human Protein Atlas (HPA),17 Encyclopedia of DNA Elements (ENCODE),18 Functional Annotation Of Mammalian genome (FANTOM)19 and the Genotype-Tissue Expression (GTEx) project,20 are now available. They offer an opportunity to understand how gene expression programs are related to cellular turnover, as a proxy for cellular lifespan. Here we examined transcriptomes of 21 somatic cells and tissues to assess the utility of comparative gene expression methods for the identification of longevity-associated gene signatures.
RESULTS We interrogated publicly available transcriptomes (paired-end RNA-seq reads) of 21 human cell types and tissues, comprising 153 individual samples, with a mean age of 56 years (Table 1; details in Supplementary Table S1). Their turnover rates (an estimate of cell lifespan4) varied from 2 (monocytes) to 32,850 (neurons) days, with all three germ layers giving rise to both short-lived a...
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ESSENTIAL STEPS TO HEALTH
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ESSENTIAL STEPS TO HEALTHY AGING
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Kansas State University Agricultural Experiment St Kansas State University Agricultural Experiment Station and Cooperative Extension Service
Author: Erin Yelland, Ph.D., Extension Specialist, Adult Development and Aging
Program Overview
The Essential Steps to Healthy Aging is a structured educational program designed to motivate and empower participants to adopt healthy lifestyle behaviors that foster optimal aging. Developed by Kansas State University’s Cooperative Extension Service, this program highlights that aging is inevitable, but how individuals care for themselves physically, mentally, and emotionally throughout life significantly influences the quality of their later years. The program promotes the idea that healthy lifestyle changes can positively impact well-being at any age.
Core Concept
Aging well is a lifelong process influenced by daily choices. Research on centenarians (people aged 100 and over) shows that adopting certain healthy behaviors contributes to longevity and improved quality of life. The program introduces 12 essential steps to maintain health and enhance successful aging.
The 12 Essential Steps to Healthy Aging
Step Number Essential Healthy Behavior
1 Maintain a positive attitude
2 Eat healthfully
3 Engage in regular physical activity
4 Exercise your brain
5 Engage in social activity
6 Practice lifelong learning
Smart Summary
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Live Longer
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How to live longer ?
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How to Live Longer is a comprehensive, science-bas How to Live Longer is a comprehensive, science-based lifestyle guide that translates decades of longevity research into simple daily actions that anyone can apply. Designed as a practical handbook rather than an academic review, it organizes the most powerful, evidence-supported habits into six core pillars of healthy aging:
Stay Active
Eat Wisely
Manage Stress
Sleep Well
Build Social Connection
Maintain Mental Stimulation
These pillars form a “longevity lifestyle,” emphasizing that small, consistent actions—especially in midlife—produce large benefits in later years.
The eBook integrates insights from real-world longevity hotspots such as Blue Zones (Okinawa, Sardinia, Nicoya, Ikaria, Loma Linda), modern public-health science, and behavioral psychology to show how daily routines shape health trajectories across the lifespan.
🔍 Core Pillars & Science-Backed Practices
1. Staying Active
Activity is the single strongest predictor of how well someone ages.
The guide recommends:
Strength training
Frequent walking
Active living (taking stairs, chores, gardening)
Stretching for mobility
Regular physical activity improves the heart, brain, metabolism, muscle strength, mood, and overall vitality.
2. Eating Wisely
A longevity-focused diet emphasizes:
Mostly plant-based meals
Fruits, vegetables, whole grains, legumes
Nuts and seeds daily
Healthy fats (olive oil, omega-3s)
Smaller portions and mindful eating
The guide highlights traditional dietary patterns of Blue Zones, especially Mediterranean and Okinawan models, which are strongly linked to long life and reduced chronic disease.
3. Managing Stress
Chronic stress accelerates aging, inflammation, and disease.
The eBook recommends:
Mindfulness and meditation
Breathing exercises
Yoga
Time in nature
Hobby-based relaxation
Scheduling downtime
These practices help regulate emotional well-being, improve resilience, and support healthier biological aging.
4. Good Quality Sleep
Sleep is described as a longevity multiplier, with profound effects on immune health, metabolic balance, brain function, and emotional stability.
The guide includes:
Consistent sleep schedules
Dark, cool sleeping environments
Reducing caffeine, alcohol, and screens before bed
5. Social Connection
Loneliness is a major risk factor for early mortality, comparable to smoking and inactivity.
The eBook emphasizes:
Strong family bonds
Friendships
Community involvement
Purposeful living (“ikigai”)
This reflects consistent findings from longevity populations worldwide.
6. Staying Mentally Active
Lifelong learning, mental stimulation, and cognitively engaging activities help preserve brain function.
Recommendations include:
Reading
Learning new skills
Puzzles or games
Creative pursuits
These habits strengthen cognitive reserve and support healthier aging.
💡 Overall Insight
The eBook argues that longevity is not about extreme interventions—it is about consistent, realistic, enjoyable habits grounded in strong science. It blends public-health evidence with lifestyle medicine, emphasizing that aging well is achievable for anyone, regardless of genetics.
Across all chapters, the tone remains practical: longevity is built through everyday choices, not expensive biohacking.
🧭 In Summary
How to Live Longer is a practical, evidence-driven handbook that shows how daily movement, nutritious eating, stress control, quality sleep, social belonging, and lifelong learning combine to support longer, healthier, more fulfilling lives....
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xevyo
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LONGEVITY DETERMINATION
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LONGEVITY DETERMINATION AND AGING
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This landmark paper by Leonard Hayflick — one of t This landmark paper by Leonard Hayflick — one of the world’s most influential aging scientists — draws a sharp, essential distinction between aging, longevity determination, and age-associated disease, arguing that much of society, policy, and even biomedical research fundamentally misunderstands what aging actually is.
Hayflick’s central message is bold and provocative:
Aging is not a disease, not genetically programmed, and not something evolution ever “intended” for humans or most animals to experience. Aging is an unintended artifact of civilization — a by-product of humans living long enough to reveal a process that natural selection never shaped.
The paper argues that solving the major causes of death (heart disease, stroke, cancer) would extend average life expectancy by only about 15 years, because these diseases merely reveal the underlying deterioration, not cause it. True breakthroughs in life extension require understanding the fundamental biology of aging, which remains dramatically underfunded and conceptually misunderstood.
Hayflick dismantles popular misconceptions—especially the belief that genes “control” aging—and instead proposes that longevity is determined by the physiological reserve established before reproductive maturity, while aging is the gradual, stochastic accumulation of molecular disorder after that point.
🔍 Core Insights from the Paper
1. Aging ≠ Disease
Hayflick insists that aging is not a pathological process.
Age-related diseases:
do not explain aging
do not reveal aging biology
do not define lifespan
LONGEVITY DETERMINATION AND AGI…
Even eliminating the top causes of death adds only ~15 years to life expectancy.
2. Aging vs. Longevity Determination
A crucial conceptual distinction:
Longevity Determination
Non-random
Set by genetic and developmental processes
Defined by how much physiological reserve an organism builds before adulthood
Determines why we live as long as we do
Aging
Random/stochastic
Begins after sexual maturation
Driven by accumulating molecular disorder and declining repair fidelity
Determines why we eventually fail and die
LONGEVITY DETERMINATION AND AGI…
This is the heart of Hayflick’s framework.
3. Genes Do Not Program Aging
Contrary to popular belief:
There is no genetic program for aging
Evolution has not selected for aging because wild animals rarely lived long enough to age
Genetic studies in worms/flies modify longevity, not the aging process itself
LONGEVITY DETERMINATION AND AGI…
Genes drive development, not the later-life entropy that defines aging.
4. Aging as Increasing Molecular Disorder
Aging results from:
cumulative energy deficits
accumulating molecular disorganization
reactive oxygen species
imperfect repair mechanisms
LONGEVITY DETERMINATION AND AGI…
This disorder increases vulnerability to all causes of death.
5. Aging Rarely Occurs in the Wild
Feral animals almost never experience aging because they die from:
predation
starvation
accidents
infection
…long before senescence emerges.
LONGEVITY DETERMINATION AND AGI…
Only human protection reveals aging in animals.
6. Aging as an Artifact of Civilization
Humans have extended life expectancy through hygiene, antibiotics, and medicine—not biology.
Because of this, we now witness:
chronic diseases
frailty
late-life dependency
LONGEVITY DETERMINATION AND AGI…
Aging is something evolution never optimized for humans.
7. Human Life Expectancy vs. Human Lifespan
Life expectation changed dramatically (30 → 76 years in the U.S.).
Life span, the maximum possible (~125 years), has not changed in over 100,000 years.
LONGEVITY DETERMINATION AND AGI…
Medicine has increased survival to old age, not the biological limit.
8. Radical Life Extension Is Extremely Unlikely
Hayflick argues:
Huge life-expectancy increases are biologically implausible
Eliminating diseases cannot produce major gains
Slowing aging itself is extraordinarily difficult and scientifically unsupported
LONGEVITY DETERMINATION AND AGI…
Even caloric restriction, the most promising method, may simply reduce overeating rather than slow aging.
🧭 Overall Essence
This paper is a foundational critique of how modern science misunderstands aging. Hayflick argues that aging is:
not programmed
not disease
not genetically controlled
not adaptive
It is the accumulation of molecular disorder after maturation — a process evolution never selected for because neither humans nor animals historically lived long enough for aging to matter.
To truly extend human life, we must:
focus on fundamental aging biology, not just diseases
distinguish aging from longevity determination
avoid unrealistic claims of dramatic lifespan extension
emphasize healthier, not necessarily longer, late life
The goal is not immortality, but active longevity free from disability....
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Eating for Health
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Eating for Health and Longevity
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Summary: Eating for Health and Longevity – A Pract Summary: Eating for Health and Longevity – A Practical Guide to Whole-Food, Plant-Based Diets
This guide, produced by SUNY Downstate Health Sciences University, provides a comprehensive, evidence-based overview of adopting a whole-food, plant-based (WFPB) diet to promote health, prevent chronic disease, and improve longevity. It offers practical advice for transitioning to plant-based eating, highlights nutritional benefits, and addresses common concerns and misconceptions.
Core Concepts of a Whole-Food, Plant-Based Diet
Definition: A WFPB diet emphasizes eating whole, minimally processed plant foods such as vegetables, fruits, whole grains, legumes, nuts, and seeds.
Exclusions: It minimizes or avoids meat, poultry, fish/seafood, eggs, dairy, refined carbohydrates (e.g., white bread, white rice), refined sugars, extracted oils, and highly processed foods.
Difference from Vegan Diet: Unlike some vegan diets, which may include refined grains, sweeteners, and oils, the WFPB diet focuses on whole foods for optimal health.
Health Benefits
Chronic Disease Prevention and Reversal: WFPB diets can prevent, manage, and sometimes reverse diseases such as diabetes, heart disease, obesity, and hypertension.
Weight Management: Effective for losing excess weight and maintaining a healthy weight.
Longevity and Vitality: Promotes vibrant health and potentially longer life by reducing lifestyle-related risk factors.
Foods to Include and Avoid
Foods to Eat and Enjoy Foods to Avoid or Minimize
Fresh and frozen vegetables Meats (red, processed, poultry, fish/seafood)
Fresh fruits Refined grains (white rice, white pasta, white bread)
Whole grains (oats, quinoa, barley) Products with refined sugars or sweeteners (sodas, candy)
Legumes (peas, lentils, beans) Highly processed or convenience foods with added salt
Unsalted nuts and seeds Eggs and dairy products
Dried fruits without additives Processed plant-based meat, cheese, or butter alternatives
Unsweetened non-dairy milks Refined, extracted oils (olive oil, canola, vegetable)
Alcoholic beverages
Smart Summary
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Inconvenient Truths
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Inconvenient Truths About Human Longevity
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This article challenges popular claims about radic This article challenges popular claims about radical life extension and explains why human longevity has biological limits, why further increases in life expectancy are slowing, and why the real goal should be to extend healthspan, not lifespan.
The authors show that many predictions of extreme longevity are based on mathematical extrapolation, not biological reality, and that these predictions ignore fundamental constraints imposed by human physiology, genetics, evolutionary history, and mortality patterns.
🧠 1. The Central Argument
Human lifespan has increased dramatically over the last 120 years, but this increase is slowing.
The authors argue that:
✅ Human longevity has an upper limit, around 85 years of average life expectancy
Inconvenient Truths About Human…
Not because we “stop improving,” but because biology imposes ceilings on mortality improvement at older ages.
❌ Radical life extension is not supported by evidence
Predictions that most people born after 2000 “will live to 100” rest on unrealistic assumptions about future declines in mortality.
⭐ The real opportunity is health extension
Improving how long people live free of disease, disability, and frailty.
📉 2. Why Radical Life Extension Is Unlikely
The paper critiques three groups of claims:
A. Mathematical extrapolations
Some argue that because death rates declined historically, they will continue to decline indefinitely—even reaching zero.
The authors compare this flawed reasoning to Zeno’s Paradox: a mathematical idea that ignores biological reality.
Inconvenient Truths About Human…
B. Claims of actuarial escape velocity
Some predict that near-future technology will reduce mortality so rapidly that people’s remaining lifespan increases every year.
The authors emphasize:
No biological evidence supports this.
Death rates after age 105 are extremely high (≈50%), not near 1%.
Inconvenient Truths About Human…
C. Linear forecasts of rising life expectancy
Predictions that life expectancy will continue to increase at 2 years per decade require huge annual mortality declines.
But real-world U.S. data show:
Only one decade since 1990 approached those gains.
Mortality improvements have dramatically slowed since 2010.
Inconvenient Truths About Human…
🧬 3. Biological, Demographic, and Evolutionary Limits
The authors outline three independent scientific lines of evidence that point to limits:
1. Life table entropy
As life expectancy approaches 80+, mortality becomes heavily concentrated between ages 60–95.
Saving lives at these ages produces diminishing returns.
Inconvenient Truths About Human…
2. Cross-species mortality patterns
When human, mouse, and dog mortality curves are scaled for time, they form parallel patterns, showing that each species has an inherent mortality signature tied to its evolutionary biology.
For humans, these comparisons imply an upper limit near 85 years.
Inconvenient Truths About Human…
3. Species-specific “warranty periods”
Each species has a biological “design life,” tied to reproductive age, development, and evolutionary trade-offs.
Human biology evolved to optimize survival to reproductive success, not extreme longevity.
Inconvenient Truths About Human…
These three independent methods converge on the same conclusion:
Human populations cannot exceed an average life expectancy of ~85 years without altering the biology of aging.
🧩 4. Why Life Expectancy Is Slowing
Life expectancy cannot keep rising linearly because:
Young-age mortality has already fallen to very low levels.
Future gains must come from reducing old-age mortality.
But aging itself is the strongest risk factor for chronic disease.
Diseases of aging (heart disease, stroke, Alzheimer’s, cancer) emerge because we live longer than ever before.
Inconvenient Truths About Human…
In short:
We already harvested the “easy wins” in longevity.
❤️ 5. The Case for Healthspan, Not Lifespan
The authors make a strong argument that focusing on curing individual diseases is inefficient:
If you cure one disease, people survive longer and simply live long enough to develop another.
This increases the “red zone”: a period of frailty and disability at the end of life.
Inconvenient Truths About Human…
⭐ The solution: Target the process of aging itself
This is the basis of Geroscience and the Longevity Dividend:
Slow biological aging
Delay multiple diseases simultaneously
Increase years of healthy life
Inconvenient Truths About Human…
This approach could:
Compress morbidity
Improve quality of life
Extend healthspan
Produce only moderate increases in lifespan (not radical ones)
🔍 6. The Authors’ Final Conclusions
1. Radical life extension lacks biological evidence.
Most claims rely on mathematical mistakes or speculation.
2. Human longevity is biologically constrained.
Current estimates show:
Lifespan limit ≈ 115 for individuals
Life expectancy limit ≈ 85 for populations
Inconvenient Truths About Human…
3. Gains in life expectancy are slowing globally.
Many countries are already leveling off near 83–85.
4. Healthspan extension is the path forward.
Improving biological aging processes could revolutionize medicine—even if lifespan changes are small.
🟢 PERFECT ONE-SENTENCE SUMMARY
Human longevity is nearing its biological limits, radical life extension is unsupported by science, and the true opportunity for the future lies not in making humans live far longer, but in enabling them to live far healthier.
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Greenland Shark Lifespan
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Greenland Shark Lifespan and Implications
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This PDF is a scientific and conceptual exploratio This PDF is a scientific and conceptual exploration of the exceptionally long lifespan of the Greenland shark (Somniosus microcephalus), one of the longest-living vertebrates on Earth, and what its unique biology can teach us about human aging and longevity. The document blends marine biology, evolutionary science, aging research, and comparative physiology to explain how and why the Greenland shark can live for centuries, and which of those mechanisms may inspire future breakthroughs in human life-extension.
🔶 1. Purpose of the Document
The paper has two main goals:
To summarize what is known about the Greenland shark’s extreme longevity
To discuss how its biological traits might inform human aging research
It provides a bridge between animal longevity science and human gerontology, making it relevant for researchers, students, and longevity scholars.
🔶 2. The Greenland Shark: A Longevity Outlier
The Greenland shark is introduced as:
The longest-lived vertebrate known to science
Estimated lifespan: 272 to 500+ years
Mature only at 150 years of age
Lives in the deep, cold waters of the Arctic and North Atlantic
The document emphasizes that its lifespan far exceeds that of whales, tortoises, and other long-lived species.
🔶 3. How Its Age Is Measured
The PDF describes how researchers used radiocarbon dating of eye lens proteins—the same method used in archeology—to determine the shark’s age.
Key points:
Eye lens proteins form before birth and never regenerate
Bomb radiocarbon traces from the 1950s provide a global timestamp
This allows scientists to estimate individual ages with high precision
🔶 4. Biological Factors Behind the Shark’s Longevity
The paper discusses multiple mechanisms that may explain its extraordinary lifespan:
⭐ Slow Metabolism
Lives in near-freezing water
Exhibits extremely slow growth (1 cm per year)
Low metabolic rate reduces cell damage over time
⭐ Cold Environment
Cold temperatures reduce oxidative stress
Proteins and enzymes degrade more slowly
⭐ Minimal Predation & Low Activity
Slow-moving and top of its food chain
Low energy expenditure
⭐ DNA Stability & Repair (Hypothesized)
Potentially enhanced DNA repair systems
Resistance to cancer and cellular senescence
⭐ Extended Development and Late Maturity
Reproductive maturity at ~150 years
Suggests an evolutionary investment in somatic maintenance over early reproduction
These mechanisms collectively support the concept that slow living = long living.
🔶 5. Evolutionary Insights
The document highlights that Greenland sharks follow an evolutionary strategy of:
Slow growth
Late reproduction
Reduced cellular damage
Enhanced long-term survival
This strategy resembles that of other long-lived species (e.g., bowhead whales, naked mole rats) and supports life-history theories of longevity.
🔶 6. Implications for Human Longevity Research
The PDF connects shark biology to human aging questions, suggesting several research implications:
⭐ Metabolic Rate and Aging
Slower metabolic processes may reduce oxidative damage
Could inspire therapies that mimic metabolic slow-down without harming function
⭐ DNA Repair & Cellular Maintenance
Studying shark genetics may reveal protective pathways
Supports research into genome stability and cancer suppression
⭐ Protein Stability at Low Temperatures
Sharks preserve tissue integrity for centuries
May inspire cryopreservation and protein stability research
⭐ Longevity Without Cognitive Decline
Sharks remain functional for centuries
Encourages study of brain aging resilience
The document stresses that while humans cannot adopt cold-water lifestyles, the shark’s biology offers clues to preventing molecular damage, a key factor in aging.
🔶 7. Broader Scientific Significance
The report argues that Greenland shark longevity challenges assumptions about:
Aging speed
Environmental impacts on lifespan
Biological limits of vertebrate aging
It contributes to a growing body of comparative longevity research seeking to understand how some species achieve extreme lifespan and disease resistance.
🔶 8. Conclusion
The PDF concludes that the Greenland shark represents a natural experiment in extreme longevity, offering valuable biological insights that could advance human aging research. While humans cannot replicate the shark’s cold, slow metabolism, studying its physiology and genetics may help uncover pathways that extend lifespan and healthspan in people.
⭐ Perfect One-Sentence Summary
This PDF provides a scientific overview of the Greenland shark’s extraordinary centuries-long lifespan and explores how its unique biology—slow metabolism, environmental adaptation, and exceptional cellular maintenance—may offer important clues for advancing human longevity....
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What is Ageing?
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What is Ageing? Longevity data.
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“What Is Ageing, and Can We Delay It?” is an acces “What Is Ageing, and Can We Delay It?” is an accessible scientific overview that explains what ageing is, why it happens, how it affects the body, and whether modern science can slow it down. The document introduces ageing as a biological process that gradually reduces the body’s ability to repair itself, making people more vulnerable to diseases such as heart disease, cancer, dementia, and diabetes.
The paper emphasizes that ageing is not a single event, but a collection of interconnected biological changes that accumulate over time. These include damage to DNA, breakdown of the immune system, loss of cell function, inflammation, and cellular “faults” that build up during life. Together, these processes drive what we recognize as ageing.
⭐ What Ageing Is
The document explains ageing as a natural, universal process caused by:
Cellular damage from stress, environment, and metabolism
Reduced ability to repair tissues
Genetic and epigenetic changes
Chronic inflammation (“inflammaging”)
It stresses that ageing is the primary risk factor for most chronic diseases.
⭐ Why We Age
The paper outlines major scientific theories:
1. Genetic influences
Some genes regulate lifespan and how fast the body accumulates damage.
2. Damage accumulation
Everyday processes (breathing, eating, stress, exposure to toxins) create wear and tear on cells.
3. Evolutionary trade-offs
Biology prioritizes reproduction over long-term maintenance—so repair systems weaken with age.
4. System-level decline
Immune function drops, the heart and muscles weaken, and brain processes slow.
⭐ Can We Delay Ageing?
The document explains that while ageing cannot be stopped, science shows it can be slowed.
It highlights several evidence-based approaches:
✔ Healthy lifestyle choices
These have the strongest impact:
Regular physical activity
Nutritious diet (e.g., Mediterranean style)
Avoiding smoking
Healthy weight
Good sleep
These habits reduce biological damage and extend healthy lifespan.
✔ Caloric restriction & fasting
Moderate caloric reduction improves metabolic function and lifespan in animals; research in humans is ongoing.
✔ Senolytics
Drugs that remove damaged “senescent” cells—shown to improve healthspan in lab models.
✔ Metformin, rapamycin, NAD boosters
These medications and supplements target key ageing pathways; still under careful research.
✔ Gene and cell therapies
Experimental therapies show potential but remain in early stages.
The paper stresses that no miracle anti-aging cure exists, but scientifically grounded interventions can delay functional decline.
⭐ What We Can Already Do Today
The document highlights practical, proven strategies that meaningfully delay ageing:
>Daily exercise
>Plant-rich diet
>Maintaining social connection
>Stress reduction
>Mental stimulation
>Prevention and early treatment of disease
>These extend healthspan—the portion of life spent healthy and independent.
⭐ Overall Meaning
The document concludes that ageing is natural and unavoidable, but the pace at which it happens is highly flexible. Through a combination of lifestyle, preventive healthcare, and emerging science, humans can significantly extend healthy life. The goal is not immortality—but more years of life spent in good health, independence, and well-being....
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Evolution of the Human
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Evolution of the Human Lifespan
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This comprehensive essay by Caleb E. Finch explore This comprehensive essay by Caleb E. Finch explores the evolution of human lifespan (life expectancy, LE) over hundreds of thousands of generations, emphasizing the interplay between genetics, environment, lifestyle, inflammation, infection, and diet. The work integrates paleontological, archaeological, epidemiological, and molecular data to elucidate how human longevity has changed from pre-industrial times to the present and projects challenges for the future.
Key Themes and Insights
Human life expectancy (LE) is uniquely long among primates:
Pre-industrial human LE at birth (~30–40 years) was about twice that of great apes (~15 years at puberty for chimpanzees). This extended lifespan arises from slower postnatal maturation and lower adult mortality rates, rooted in both genetics and environmental factors.
Rapid increases in LE during industrialization:
Since 1800, improvements in nutrition, hygiene, and medicine have nearly doubled human LE again, reaching 70–85 years in developed populations. Mortality improvements were not limited to early life but included significant gains in survival at older ages (e.g., after age 70).
Environmental and epigenetic factors dominate recent LE trends:
Human lifespan heritability is limited (~25%), highlighting the importance of environmental and epigenetic influences on aging and mortality.
Infection and chronic inflammation shape mortality and aging:
The essay emphasizes the “inflammatory load”—chronic exposure to infection and inflammation—as a critical factor affecting mortality trajectories both historically and evolutionarily.
Mortality Phase Framework and Historical Cohort Analysis
Finch and collaborators define four mortality phases to analyze lifespan changes using historical European data (notably Sweden since 1750):
Mortality Phase Age Range (years) Description Mortality Pattern
Phase 1 0–9 Early age mortality (mainly infec-tions) Decreasing mortality from birth to puberty
Phase 2 10–40 Basal mortality (lowest mortality) Lowest mortality across lifespan
Phase 3 40–80 Exponentially accelerating mortality Gompertz model exponential increase
Phase 4 >80 Mortality plateau (approaching max) Mortality rate approaches ~0.5/year
Key insight: Reductions in early-life mortality (Phase 1) strongly predict lower mortality at older ages (Phase 3), demonstrating persistent impacts of early infection/inflammation on aging-related deaths.
J-shaped mortality curve: Mortality rates are high in infancy, drop to a minimum around puberty, then accelerate exponentially in adulthood.
Gompertz model explains adult mortality acceleration:
[ m(x) = A e^{Gx} ]
where ( m(x) ) is mortality rate at age ( x ), ( A ) is initial mortality rate, and ( G ) is the Gompertz coefficient (rate of acceleration).
Despite improvements in LE, the rate of mortality acceleration (G) has increased, meaning aging processes remain or have intensified, but reduced background mortality (A) has driven LE gains.
Links Between Early Life Conditions and Later Health
Early life infections and inflammation leave a lifelong “cohort morbidity” imprint, influencing adult mortality and chronic disease risk (e.g., cardiovascular disease).
Studies of historical cohorts show strong correlations between neonatal mortality and mortality at age 70 across multiple European countries.
Adult height, a marker of growth and nutrition, reflects childhood infection burden and correlates inversely with early mortality.
The 1918 influenza pandemic provides a notable example: prenatal exposure led to reduced growth, lower education, and a 25% increase in adult heart disease risk for those born during or shortly after the pandemic.
Chronic Diseases, Inflammation, and Infection
Chronic infections and inflammation contribute to major aging diseases such as atherosclerosis, cancer, and vascular diseases.
The essay highlights the role of Helicobacter pylori (gastric cancer risk) and tobacco smoke (vascular inflammation and cancer) as examples linking infection/inflammation to chronic disease.
Contemporary infectious diseases like HIV/AIDS, despite improved treatment, increase the risk of vascular disease and non-AIDS cancers, illustrating ongoing infection-inflammation interactions in aging.
Insights from Hunter-Gatherer Populations: The Tsimane Case Study
The Tsimane, a Bolivian forager-horticulturalist population, have a life expectancy (~42 years) comparable to pre-industrial Europe, with high infectious and inflammatory loads (e.g., 60% parasite prevalence, elevated CRP levels).
Despite high inflammation, they have low blood pressure, low blood cholesterol, low body mass index (~23), and low incidence of ischemic heart disease, likely due to diet low in saturated fats and physical activity.
This population provides a unique natural experiment to study the relationships among infection, inflammation, diet, and aging in the absence of modern medical interventions.
Evidence of Chronic Disease in Ancient Populations
Radiological studies of Egyptian mummies (Old and New Kingdoms) reveal advanced atherosclerosis in approximately half of adult specimens, despite their infectious disease burden and diet rich in saturated fats.
Similarly, the “Tyrolean iceman” (~3300 BCE) exhibits arterial calcifications.
These findings, though limited in sample size and representativeness, suggest vascular diseases accompanied infections and inflammation in ancient humans.
Evolutionary Perspectives on Diet, Inflammation, and Lifespan
Finch proposes a framework of ecological stages in human evolution focusing on inflammatory exposures and diet, hypothesizing how humans evolved longer lifespans despite pro-inflammatory environments.
Stage Approximate Period Ecology & Group Size Diet Characteristics Infection/Inflammation Exposure
1 4–6 MYA Forest-savannah, small groups Low saturated fat intake Low exposure to excreta
2 4–0.5 MYA Forest-savannah, small groups Increasing infections from excreta & carrion; increased pollen & dust exposure Increased infection and inflammation exposure
3 0.5 MYA–15,000 YBP Varied, temperate zone, larger groups Increased meat consumption; use of domestic fire and smoke Increased exposure to smoke and inflammation
4 12,000–150 YBP Permanent settlements, larger groups Cereals and milk from domestic crops and animals Intense exposure to human/domestic animal excreta & parasites
5 1800–1950 Industrial age, high-density homes Improved nutrition year-round Improving sanitation, reduced infections
6 1950–2010 Increasing urbanization High fat and sugar consumption; rising obesity Public health measures, vaccination, antibiotics
7 21st century >90% urban, very high density Continued high fat/sugar intake Increasing ozone, air pollution, water shortages
Humans evolved longer lifespans despite increased exposure to pro-inflammatory factors such as:
Higher dietary fat (10x that of great apes), particularly saturated fats.
Exposure to infections through scavenging, carrion consumption, and communal living.
Increased inhalation of dust, pollen, and volcanic aerosols due to expanded savannah habitats.
Chronic smoke inhalation from controlled use of fire and indoor biomass fuel combustion.
Exposure to excreta in denser human settlements, contrasting with great apes’ hygienic behaviors (e.g., nest abandonment).
Introduction of dietary inflammatory agents including cooked food derivatives (advanced glycation end products, AGEs) and gluten from cereal grains.
Counterbalancing factors included antioxidants and anti-inflammatory dietary components (e.g., polyphenols, omega-3 fatty acids, salicylates).
Skeletal evidence shows a progressive decrease in adult body mass over 60,000 years prior to the Neolithic, possibly reflecting increased inflammatory burden and nutritional stress.
The Role of Apolipoprotein E (apoE) in Evolution and Aging
The apoE gene, critical for lipid transport, brain function, and immune responses, has three main human alleles: E2, E3, and E4.
ApoE4, the ancestral allele, is linked to:
Enhanced inflammatory responses.
Efficient fat storage (a “thrifty gene” hypothesis).
Increased risk of Alzheimer’s disease, cardiovascular disease, and shorter lifespan.
Possible protection against infections and better cognitive development in high-infection environments.
ApoE3, unique to humans and evolved ~0.23 MYA, is associated with reduced inflammatory responses and is predominant today.
The chimpanzee apoE resembles human apoE3 functionally, which may relate to their lower incidence of Alzheimer-like pathology and vascular disease.
This allelic variation reflects evolutionary trade-offs between infection resistance, metabolism, and longevity.
Future Challenges to Human Lifespan Gains
Current maximum human lifespan may be approaching biological limits:
Using Gompertz mortality modeling, Finch and colleagues estimate maximum survival ages of around 113 for men and 120 for women under current mortality patterns, matching current longevity records.
Further increases in lifespan require slowing or delaying mortality acceleration, which remains challenging given biological constraints and limited human evidence for such changes.
Emerging global threats may reverse recent lifespan gains:
Climate change and environmental deterioration, including increasing heat waves, urban heat islands, and air pollution (notably ozone), which disproportionately affect the elderly.
Air pollution, especially from vehicular emissions and biomass fuel smoke, exacerbates cardiovascular and pulmonary diseases and may accelerate brain aging.
Water shortages and warming expand the range and incidence of infectious diseases, including malaria, dengue, and cholera, posing risks to immunosenescent elderly.
Protecting aging populations from these risks will require:
Enhanced public health measures.
Research on dietary and pharmacological interventions (e.g., antioxidants like vitamin E).
Improved urban planning and pollution control.
Core Concepts
Life expectancy (LE): Average expected lifespan at birth or other ages.
Gompertz model: Mathematical model describing exponential increase in mortality with age.
Cohort morbidity: The lasting health impact of early life infections and inflammation on aging and mortality.
Inflammaging: Chronic, low-grade inflammation that contributes to aging and age-related diseases.
Apolipoprotein E (apoE): A protein with genetic polymorphisms influencing lipid metabolism, inflammation, infection resistance, and neurodegeneration.
Advanced glycation end products (AGEs): Pro-inflammatory compounds formed during cooking and metabolism, implicated in aging and chronic disease.
Compression of morbidity: The hypothesis that morbidity is concentrated into a shorter period before death as lifespan increases.
Quantitative and Comparative Data Tables
Table 1: Ecological Stages of Human Evolution by Diet and Infection Exposure
Stage Time Period Ecology & Group Size Diet Characteristics Infection & Inflammation Exposure
1 4–6 MYA Forest-savannah, small groups Low saturated fat intake Low exposure to excreta
2 4–0.5 MYA Forest-savannah, small groups Increasing exposure to infections Exposure to excreta, carrion, pollen, dust
3 0.5 MYA–15,000 YBP Varied, temperate zones, larger groups Increased meat consumption, use of fire Increased smoke exposure, infections
4 12,000–150 YBP Permanent settlements Cereals and milk from domesticated crops High exposure to human and animal excreta and parasites
5 1800–1950 Industrial age, high-density homes Improved nutrition Reduced infections and improved hygiene
6 1950–2010 Increasing urbanization High fat and sugar intake; rising obesity Vaccination, antibiotics, pollution control
7 21st century Highly urbanized, dense populations Continued poor diet trends Increased air pollution, ozone, climate change
Table 2: apoE Allele Differences between Humans and Chimpanzees
Residue Position Chimpanzee apoE Human apoE4 Human apoE3
61 Threonine (T) Arginine ® Arginine ®
112 Arginine ® Arginine ® Cysteine ©
158 Arginine ® Arginine ® Arginine ®
The chimpanzee apoE protein functions more like human apoE3 due to residue 61, associated with lower inflammation and different lipid binding.
Timeline of Human Lifespan Evolution and Key Events
Period Event/Characteristic
~4–6 million years ago Shared great ape ancestor; low-fat diet, low infection exposure
~4–0.5 million years ago Early Homo; increased exposure to infections, pollen, dust
~0.5 million years ago Use of fire; increased meat consumption; smoke exposure
12,000–150 years ago Neolithic settlements; cereal and milk consumption; high parasite loads
1800 Industrial revolution; sanitation, nutrition improvements lead to doubling LE
1918 Influenza pandemic; prenatal infection impacts long-term health
1950 onward Vaccines, antibiotics reduce infections; obesity rises
21st century Climate change, air pollution threaten gains in lifespan
Conclusions
Human lifespan extension is a product of complex interactions between genetics, environment, infection, inflammation, and diet.
Historical and contemporary data demonstrate that early-life infection and inflammation have lifelong impacts on mortality and aging trajectories.
The evolution of increased lifespan in Homo sapiens occurred despite increased exposure to various pro-inflammatory environmental factors, including diet, smoke, and pathogens.
Genetic adaptations, such as changes in the apoE gene, reflect trade-offs balancing inflammation, metabolism, and longevity.
While remarkable lifespan gains have been achieved, biological limits and emerging global environmental challenges (climate change, pollution, infectious disease risks) threaten to stall or reverse these advances.
Addressing these challenges requires integrated public health strategies, environmental protections, and further research into the mechanisms linking inflammation, infection, and aging.
Keywords
Human lifespan evolution
Life expectancy
Infection
Inflammation
Mortality phases
Gompertz model
Apolipoprotein E (apoE)
Hunter-gatherers (Tsimane)
Chronic diseases of aging
Environmental exposures
Climate change
Air pollution
Evolutionary medicine
Early life programming
Aging biology
FAQ
Q1: What causes the increase in human life expectancy after 1800?
A1: Improvements in hygiene, nutrition, and medicine reduced infectious disease mortality, especially in early life, enabling longer survival into old age.
Q2: How does early-life infection affect aging?
A2: Early infections induce chronic inflammation (“cohort morbidity”) that persists and accelerates aging-related mortality and diseases such as cardiovascular conditions.
Q3: Why do humans live longer than great apes despite higher inflammatory exposures?
A3: Humans evolved genetic adaptations, such as apoE variants, and lifestyle changes that mitigate some inflammatory damage, enabling longer lifespan despite greater pro-inflammatory environmental exposures.
Q4: What are the future risks to human longevity gains?
A4: Environmental degradation including air pollution, ozone increase, heat waves, water shortages, and emerging infectious diseases linked to climate change threaten to reverse recent lifespan gains, especially in elderly populations.
Q5: Can lifespan increases continue indefinitely?
A5: Modeling suggests biological and mortality limits near current record lifespans; further gains require slowing or delaying aging processes, which remain challenging.
This summary is grounded entirely in Caleb E. Finch’s original essay and faithfully reflects the detailed scientific content, key findings, and hypotheses presented therein.
Smart Summary...
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LONGEVITY PAY Program
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LONGEVITY PAY Program Guide
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The Longevity Pay Program Guide is an official 18- The Longevity Pay Program Guide is an official 18-page policy and administration manual issued by the Oklahoma Office of Management and Enterprise Services (OMES) – Human Capital Management, revised in November 2024. It serves as the definitive statewide reference for how longevity pay is calculated, awarded, managed, and governed for Oklahoma state employees. It explains eligibility rules, creditable service, payout provisions, statutory authority, and administrative procedures in clear detail.
The guide begins with the historical foundation of the program, established in 1982 to help agencies attract and retain skilled employees. It then provides a structured breakdown of who is entitled to longevity pay and which types of employment count toward creditable service. These include most state employees, certain educational institutions under the State Regents for Higher Education, employees in the judicial branch, legislative session employees with at least two years’ part-time service, and contract employees paid with state fiscal resources. It also lists non-eligible groups such as members of boards and commissions, elected officials, city/county employees, and workers in private or proprietary universities.
The document defines eligibility status, emphasizing rules around continuous service, breaks in service, temporary employment conversion, legislative service provisions, and different categories of leave without pay (LWOP) such as workers’ compensation leave, active military duty, and other unpaid leave. Each type of LWOP impacts the longevity anniversary date differently.
A major section describes creditable service, outlining conditions for counting part-time or temp-to-permanent employment, rules regarding dual employment, and special provisions for employees affected by reduction-in-force. It explains how all prior qualifying service is totaled, rounded down to whole years, and certified using official OMES longevity forms.
The guide then details payout provisions, including the full statutory longevity payment schedule, which awards annual lump-sum payments ranging from $250 (2–4 years) up to $2,000 (20 years), with an additional $200 added every two years beyond 20 years. Full-time and qualifying part-time employees receive the entire amount, while other part-time or LWOP-affected employees receive prorated payments. It also explains special payout rules for employees separating due to reduction-in-force, voluntary buyout, retirement, or death.
A built-in longevity calculator is referenced for agencies to compute payments accurately, and a robust FAQ section addresses real-world scenarios such as temporary service conversion, workers’ compensation periods, fragmented prior service, retirement timing, and special cases like CompSource Oklahoma or Pathfinder retirement eligibility.
The appendices provide important supporting materials:
Appendix A – the official OMES HCM-52 Longevity Certification Form.
Appendix B – a complete list of eligible institutions under the State Regents for Higher Education.
Appendix C – a list of independent/private universities that are not eligible.
Appendix D – institutions under the Department of Career and Technology Education.
Appendix E – the full statutory text of 74 O.S. § 840-2.18, which legally governs Oklahoma’s longevity pay system.
Overall, the guide is the authoritative source for ensuring accurate, consistent, statewide administration of longevity pay, combining legislative requirements, policy clarification, and practical, step-by-step administrative guidance.
If you'd like, I can prepare:
📌 a simplified one-page summary
📌 a comparison with your other longevity documents
📌 a training guide or slide deck version
📌 or a cross-document integrated briefing
Just tell me!...
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Extension of longevity
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Extension of longevity in Drosophila mojavensis by
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Summary
The study by Starmer, Heed, and Rockwood- Summary
The study by Starmer, Heed, and Rockwood-Slusser (1977) investigates the extension of longevity in Drosophila mojavensis when exposed to environmental ethanol and explores the genetic and ecological factors underlying this phenomenon. The authors focus on differences between subraces of D. mojavensis, emphasizing the role of alcohol dehydrogenase (ADH) isozyme polymorphisms, environmental heterogeneity of host plants, and related genetic elements.
Core Findings
Longevity Increase by Ethanol Exposure: Adult D. mojavensis flies, which breed and feed on necrotic cacti, show a significant increase in longevity when exposed to atmospheric ethanol. This longevity extension is:
Diet-independent (i.e., does not depend on yeast ingestion).
Accompanied by retention of mature ovarioles and eggs in females, indicating not just longer life but maintained reproductive potential.
Subrace Differences: Longevity increases differ among strains from different geographic regions:
Flies from Arizona and Sonora, Mexico (subrace BI) exhibit the greatest increase in longevity.
Flies from Baja California, Mexico (subrace BII) show the least increase.
Genetic Correlations:
The longevity response correlates with the frequency of alleles at the alcohol dehydrogenase locus (Adh).
Adh-S allele (slow electrophoretic form) is prevalent in Arizona and Sonora populations; its enzyme product is more heat- and pH-tolerant.
Adh-F allele (fast electrophoretic form) predominates in Baja California populations; its enzyme product is heat- and pH-sensitive but shows higher activity with isopropanol as substrate.
Modifier genes, including those associated with chromosomal inversions on the second chromosome (housing the octanol dehydrogenase locus), may also influence longevity response.
Environmental Heterogeneity: Differences in longevity and allele frequencies correspond to the distinct physical and chemical environments of the host cacti:
Arizona-Sonora flies breed on organpipe cactus (Lemaireocereus thurberi), which exhibits extreme temperature and pH variability.
Baja California flies breed on agria cactus (Machaerocereus gummosus), which shows moderate temperature and pH but contains relatively high concentrations of isopropanol.
The interaction between substrate alcohol content, temperature, and pH likely maintains the polymorphism at the ADH locus and influences evolutionary adaptations.
Experimental Design and Key Results
Experimental Setup
Flies were exposed to various concentrations of atmospheric ethanol (0.0% to 8.0% vol/vol) in sealed vials containing cotton soaked with ethanol solutions.
Longevity was measured as the lifespan of adult flies exposed to ethanol vapors, and data were log-transformed (ln[hr]) for statistical analysis.
Different strains from Baja California, Sonora, and Arizona were tested, alongside analysis of ADH allele frequencies and chromosomal inversions.
Axenic (microbe-free) strains were used to test the effect of yeast ingestion on longevity.
Summary of Key Experiments
Experiment Purpose Main Result
1 (Ethanol dose response) Test longevity response of D. mojavensis adults to ethanol vapors at different concentrations Longevity increased significantly at 1.0%, 2.0%, and 4.0% ethanol; highest female longevity observed in 4.0% ethanol group, with retention of mature eggs
2 (Yeast dependence) Assess whether longevity increase depends on live yeast ingestion Longevity increase occurred regardless of yeast treatment; live yeasts (Candida krusei or Kloeckera apiculata) not essential for enhanced longevity
3 (Subrace and sex differences) Compare longevity response among strains from different regions and sexes Females from Arizona-Sonora (subrace BI) showed significantly greater relative longevity increase than Baja California (subrace BII); males showed less pronounced differences
4 (Isozyme stability tests) Measure heat and pH stability of ADH-F and ADH-S isozymes ADH-F enzyme less stable at high temperature (45°C) and acidic pH compared to ADH-S; ADH-F activity reduced after 7-11 minutes heat exposure
Quantitative Data Highlights
Longevity Response to Ethanol Concentrations (Experiment 1)
Ethanol Concentration (%) Effect on Longevity
0.0 (Control) Baseline
0.5 No significant increase
1.0 Significant increase
2.0 Significant increase (highest relative longevity)
4.0 Significant increase
8.0 No increase (toxicity likely)
Analysis of Variance (Table 1 and Table 3)
Source of Variation Significance (p-value) Effect Description
Ethanol treatment p < 0.001 Strong effect on longevity
Yeast treatment Not significant No strong effect on longevity
Interaction (Ethanol x Yeast) p < 0.05 Minor effects, but overall yeast not required
Subrace p < 0.001 Significant effect on relative longevity
Sex Not significant Sex alone not significant, but sex x subrace interaction significant
Subrace x Sex interaction p < 0.001 Males and females respond differently across subraces
Ethanol treatment (dose) p < 0.01 Different doses produce varying longevity effects
Correlation Coefficients (Longevity Response vs. Genetic Factors)
Genetic Factor Correlation with Longevity Response at 2.0% Ethanol Correlation at 4.0% Ethanol
Frequency of Adh-F allele -0.633 (negative correlation) -0.554 (negative correlation)
Frequency of ST chromosomal arrangement (3rd chromosome) -0.131 (non-significant) 0.004 (non-significant)
Frequency of LP chromosomal arrangement (2nd chromosome) -0.694 (negative correlation) -0.713 (negative correlation)
Ecological and Genetic Interpretations
The Adh-S allele product is more heat- and pH-tolerant, which suits the variable, extreme environment of the organpipe cactus in Arizona and Sonora.
The Adh-F allele product is less stable under heat and acidic conditions but metabolizes isopropanol effectively, aligning with the chemical environment of Baja California’s agria cactus.
The distribution of Adh alleles matches the physical and chemical characteristics of the host cactus substrates, suggesting natural selection shapes the genetic polymorphism at the ADH locus.
The presence of isopropanol in agria cactus tissues may favor the Adh-F allele, as its enzyme shows higher activity with isopropanol.
The second chromosome inversion frequency correlates with longevity response, implicating the octanol dehydrogenase locus and potential modifier genes in ethanol tolerance.
Biological Significance and Implications
The study supports the hypothesis that environmental ethanol serves as a selective agent influencing longevity and allele frequencies in desert-adapted Drosophila.
The increased longevity and maintained reproductive capacity in ethanol vapor suggest a fitness advantage and physiological adaptation.
Findings align with broader research on **genetic polymorphisms in Dros
Smart Summary
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Subjective Longevity
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Subjective Longevity Expectations
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This document is a research paper prepared for the This document is a research paper prepared for the 16th Annual Joint Meeting of the Retirement Research Consortium (2014). Written by Mashfiqur R. Khan and Matthew S. Rutledge (Boston College) and April Yanyuan Wu (Mathematica Policy Research), it investigates how subjective longevity expectations (SLE)—people’s personal beliefs about how long they will live—influence their retirement plans.
Using data from the Health and Retirement Study (HRS) and an instrumental variables approach, the authors analyze how individuals aged 50–61 adjust their planned retirement ages and expectations of working at older ages based on how long they think they will live. SLE is measured by asking respondents their perceived probability of living to ages 75 and 85, then comparing these expectations to actuarial life expectancy tables to create a standardized measure (SLE − OLE).
The study finds strong evidence that people who expect to live longer plan to work longer. Specifically:
A one-standard-deviation increase in subjective life expectancy makes workers 4–7 percentage points more likely to plan to work full-time into their 60s.
>Individuals with higher SLE expect to work five months longer on average.
>Women show somewhat stronger responses than men.
>Changes in a person’s SLE over time also lead to changes in their planned retirement ages.
>Actual retirement behaviour also correlates with SLE, though the relationship is weaker due to life shocks such as sudden health issues or job loss.
The paper concludes that subjective perceptions of longevity play a major role in retirement planning. As objective life expectancy continues to rise, improving public awareness of increased longevity may help encourage longer work lives and improve retirement security....
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healthy lifespan
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Healthy lifespan inequality
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This document provides a comprehensive global anal This document provides a comprehensive global analysis of healthy lifespan inequality (HLI)—a groundbreaking indicator that measures how much variation exists in the age at which individuals first experience morbidity. Unlike traditional health metrics that capture only averages, such as life expectancy (LE) and health-adjusted life expectancy (HALE), HLI reveals the distribution and timing of health deterioration within populations.
Using data from the Global Burden of Disease Study 2019, the authors reconstruct mortality and morbidity curves to compare lifespan inequality (LI) with healthy lifespan inequality across 204 countries and territories from 1990 to 2019. This analysis uncovers significant global patterns in how early or late people begin to experience disease, disability, or less-than-good health.
The document presents several key findings:
1. Global Decline in Healthy Lifespan Inequality
Between 1990 and 2019, global HLI decreased for both sexes, indicating progress in narrowing the spread of ages at which morbidity begins. However, high-income countries experienced stagnation, showing no further improvement despite increases in longevity.
2. Significant Regional Differences
Lowest HLI is observed in high-income regions, East Asia, and Europe.
Highest HLI is concentrated in Sub-Saharan Africa and South Asia.
Countries such as Mali, Niger, Nigeria, Pakistan, and Haiti exhibit the widest variability in morbidity onset.
3. Healthy Lifespan Inequality Is Often Greater Than Lifespan Inequality
Across most regions, HLI exceeds LI—meaning variability in health loss is greater than variability in death. This indicates populations are becoming more equal in survival but more unequal in how and when they experience disease.
4. Gender Differences
Women tend to experience higher HLI than men, reinforcing the “health–survival paradox”:
Women live longer
But spend more years in poor health
And experience more uncertainty about when morbidity begins.
5. Rising Inequality After Age 65
For older adults, HLI65 has increased globally, signaling that while people live longer, the onset of morbidity is becoming more unpredictable in later life. Longevity improvements do not necessarily compress morbidity at older ages.
6. A Shift in Global Health Inequalities
The study reveals that as mortality declines worldwide, inequalities are shifting away from death and toward disease and disability. This transition marks an important transformation in modern population health and has major implications for:
healthcare systems
pension planning
resource allocation
long-term care
public health interventions
7. Policy Implications
The findings stress that improving average lifespan is not enough. Policymakers must also address when morbidity begins and how uneven that experience is across populations. Rising heterogeneity in morbidity onset, especially among older adults, requires:
stronger preventative health strategies
lifelong health monitoring
reduction of socioeconomic and regional disparities
integration of morbidity-related indicators into national health assessments
In Short
This study reveals a crucial and previously overlooked dimension of global health: even as people live longer, the timing of health deterioration is becoming more unequal, especially in high-income and aging societies. Healthy lifespan inequality is emerging as a vital metric for understanding the true dynamics of global aging and for designing health systems that prioritize not only longer life, but fairer and healthier life.
If you want, I can also create:
✅ A shorter perfect description
✅ An executive summary
✅ A diagram for HLI vs LI
✅ A simplified student-level explanation...
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6091bea7-3a23-4d1c-8647-5f933aff91ac
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Effect of supplemented
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Effect of supplemented water on fecundity
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The study “Effect of Supplemented Water on Fecundi The study “Effect of Supplemented Water on Fecundity and Longevity” examines how different types of water—particularly fruit-infused or nutrient-enriched water—affect the reproductive output (fecundity) and overall lifespan (longevity) of a test organism. The experiment compares the impact of control water versus various supplemented waters such as apple water, showing how hydration quality can influence biological performance.
The findings demonstrate that apple-supplemented water produced the highest fecundity, meaning it led to the greatest number of eggs or offspring compared with all other treatments. This suggests that certain nutrients present in fruit-based water may stimulate reproductive capacity. However, results for longevity were mixed and highly variable, with some supplemented waters increasing lifespan and others having minimal or inconsistent effects. The study highlights the complexity of how hydration quality influences biological processes, emphasizing that while enriched water can boost reproduction, its effects on longevity are not uniform.
Overall, the research concludes that supplemented water can significantly enhance fecundity, but its impact on lifespan depends on the type of supplement and biological conditions, suggesting important implications for nutritional interventions and life-history strategies.
If you want, I can also provide:
✅ A short summary
✅ A 3–4 line description
✅ A student-friendly simple explanation
✅ Quiz questions from this file
Just tell me!...
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{"input_type": "file", "source {"input_type": "file", "source": "/home/sid/tuning/finetune/backend/output/qrlwojjn-3033/data/document.pdf", "num_examples": 245, "bad_lines": 0}...
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Credible Power-Sharing
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Credible Power-Sharing and the Longevity
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“Credible Power-Sharing: Evidence From Cogovernanc “Credible Power-Sharing: Evidence From Cogovernance in Colombia” is a research study examining whether power-sharing institutions can help reduce violence and build political stability in regions historically affected by armed conflict. Focusing on a cogovernance reform in Colombia, the paper evaluates whether granting communities a formal role in local decision-making can create credible commitments between the state and citizens, thereby reducing conflict-related violence.
The reform introduced a municipal cogovernance mechanism that gave civilians shared authority over public resource allocation. The authors combine administrative data, qualitative fieldwork, and quantitative causal-inference methods to measure the reform’s effect on governance outcomes and security conditions.
The findings show that cogovernance significantly increased civilian participation, improved transparency in local government, and reduced opportunities for corruption. Most importantly, the study documents a substantial decline in violence, especially in areas with a strong presence of armed groups. The mechanism worked by enhancing the credibility of state commitments: when citizens gained real influence in local policy, trust increased, and armed groups had fewer incentives to interfere.
The paper concludes that credible power-sharing arrangements can meaningfully reduce violence when they provide communities with real authority and when institutions are robust enough to enforce shared decision-making. The Colombian case offers broader insights for countries attempting to transition out of conflict through participatory governance.
If you want, I can also provide:
✅ A short 3–4 line summary
✅ A student-friendly simple version
✅ MCQs or quiz questions from this file
Just tell me!...
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Longevity and mortality
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Longevity and mortality
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This PDF is a short scientific communication publi This PDF is a short scientific communication published in the Journal of Mental Health & Aging (2023). It provides a concise, structured overview of the major biological, environmental, socioeconomic, and lifestyle factors that influence how long people live (longevity) and why people die at different rates (mortality). The paper’s goal is to summarize the multidimensional causes of lifespan variation in global populations.
The article emphasizes that longevity is shaped by a complex interaction of genetics, environment, healthcare access, social conditions, education, medical advancements, and lifestyle choices. It also highlights how these factors differ across populations, contributing to unequal health outcomes.
🔶 1. Purpose of the Article
The paper aims to:
Clarify the major determinants of human longevity
Summarize scientific evidence on mortality risk factors
Highlight how biological and environmental factors interact
Emphasize that many determinants are modifiable (e.g., lifestyle, environment, healthcare access)
longevity-and-mortality-underst…
It serves as an accessible summary for researchers, students, and health professionals.
🔶 2. Key Determinants of Longevity and Mortality
The pdf identifies several core categories that influence life expectancy:
✔ A) Genetic Factors
Genetics contributes significantly to individual longevity:
Some genetic variants support long life
Others predispose individuals to chronic diseases
longevity-and-mortality-underst…
Thus, inherited biology sets a baseline for lifespan potential.
✔ B) Lifestyle Factors
These are among the strongest and most modifiable influences:
Diet quality
Physical activity
Smoking and alcohol use
Substance abuse
longevity-and-mortality-underst…
Healthy lifestyles reduce chronic disease risk and boost life expectancy.
✔ C) Environmental Factors
Environment plays a major role in mortality risk:
Air pollution
Exposure to toxins
Access to clean water and sanitation
Availability of healthy food
longevity-and-mortality-underst…
Living in hazardous or polluted settings increases cardiovascular, respiratory, and other disease risks.
✔ D) Socioeconomic Status (SES)
The paper stresses that income and education have profound impacts on health:
Higher-income individuals typically have:
better access to healthcare
safer living conditions
healthier diets
Lower SES is linked to higher mortality and lower life expectancy
longevity-and-mortality-underst…
✔ E) Healthcare Access and Quality
Regular medical care is critical:
Preventive screenings
Early diagnosis
Effective treatment
Management of chronic conditions
longevity-and-mortality-underst…
Disparities in healthcare access create significant differences in mortality rates between populations.
✔ F) Education
Education improves lifespan by:
increasing health literacy
encouraging healthy behaviors
improving access to resources
longevity-and-mortality-underst…
Education is presented as a key structural determinant of longevity.
✔ G) Social Connections
Strong social support improves both mental and physical health, increasing lifespan.
Loneliness and social isolation, by contrast, elevate mortality risk.
longevity-and-mortality-underst…
✔ H) Gender Differences
Women live longer than men due to:
biological advantages
hormonal differences
differing sociocultural behaviors
longevity-and-mortality-underst…
Although the gap is narrowing, gender continues to be a strong predictor of longevity.
✔ I) Medical Advances
Modern medicine plays a major role in rising life expectancy:
surgery
pharmaceuticals
new treatments
technological improvements
longevity-and-mortality-underst…
These innovations prevent and manage diseases that previously caused early mortality.
🔶 3. Major Conclusion
The article concludes that:
Longevity and mortality are shaped by a wide network of interacting factors
Many influences (lifestyle, environment, healthcare access) are modifiable
Improving these areas can significantly raise life expectancy
Despite progress, many aspects of longevity remain incompletely understood
longevity-and-mortality-underst…
⭐ Perfect One-Sentence Summary
This article summarizes how longevity and mortality are shaped by genetics, lifestyle, environment, socioeconomic status, healthcare access, education, social support, gender, and medical advances, emphasizing that these interconnected factors create significant differences in lifespan across populations...
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Old Christmas Washington
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This is the new version of Christmas data
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“Old Christmas” is Washington Irving’s warm and no “Old Christmas” is Washington Irving’s warm and nostalgic account of spending Christmas in the English countryside. The narrator travels from London to a rural estate called Brace Bridge Hall, where he is welcomed by Squire Brace Bridge, a kind, traditional gentleman who loves preserving old English holiday customs.
When the narrator arrives, he is greeted with joyful hospitality, snowy landscapes, and preparations for the festivities. Irving describes the cheerful journey to the Hall with servants, villagers, and travelers all celebrating the season.
Inside Brace Bridge Hall, the atmosphere is lively and full of old-fashioned Christmas traditions:
🎄 Festive Decorations
The Hall is decorated with holly, ivy, bright fires, and evergreen branches, giving it a warm, old-world Christmas charm.
🍽 Traditional Feasting
Guests enjoy a grand Christmas dinner, including roast meats, plum pudding, and punch. Irving highlights the fellowship and joy of sharing a meal.
🎶 Music, Games & Merriment
The evening is filled with dancing, singing of carols, storytelling, and playful games. Everyone—old and young—joins the fun.
🙏 A Visit to Church
On Christmas morning, the Squire leads the group to the village church. Irving describes the peaceful scene, the old choir, and the sense of shared community.
❤️ Spirit of Generosity
Throughout the holiday, the Squire shows kindness to the poor, gives gifts to villagers, and spreads goodwill—demonstrating the true spirit of Christmas.
🌟 Meaning of the Celebration
>Irving blends humor, nostalgia, and admiration for ancient customs, capturing the >warmth of an old English Christmas. The story celebrates:
>family unity
>community traditions
>charity
>joy
>fond remembrance of earlier times
By the end of “Old Christmas,” the narrator leaves Bracebridge Hall with a full heart, inspired by the beauty, kindness, and timeless traditions he experienced....
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LONGEVITY PAY
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LONGEVITY PAY
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This document is a concise, practical proposal out This document is a concise, practical proposal outlining how SCRTD (South Central Regional Transit District) can implement a Longevity Pay Program—a compensation strategy designed to reward long-term employees, reduce turnover, improve recruitment, and enhance organizational stability. It explains why longevity pay is especially important for a young, growing public agency competing for talent with neighboring employers such as the City of Las Cruces and Doña Ana County.
The core message:
Longevity pay motivates employees to stay, rewards loyalty, stabilizes the workforce, and reduces long-term training and hiring costs.
🧩 Key Points & Insights
1. What Longevity Pay Is
Longevity pay is an incentive that rewards employees for staying with the organization for extended periods.
It benefits:
employees (through financial or non-financial rewards)
employers (through stronger retention and lower costs)
Longevity-Pay
2. Why SCRTD Needs It
Since SCRTD is a relatively new transit agency, it struggles to compete with larger, established local employers. Longevity pay would:
increase employee satisfaction
retain skilled workers
stabilize operations
reduce turnover and training costs
Longevity-Pay
3. Start With Modest Early Rewards
Because the agency is young, the proposal recommends offering smaller, earlier rewards (starting at 5 years) to acknowledge employees who joined in SCRTD’s early growth phase.
Longevity-Pay
4. Tiered Longevity Pay Structure
A sample tiered system is provided:
After 5 years: +2% salary or $1,000 bonus
After 7 years: +3% salary or $1,500 bonus
After 10 years: +5% salary or $2,500 bonus
Every 5 years after: additional 2–3% increase or equivalent bonus
This creates clear milestones and long-term motivation.
Longevity-Pay
5. Tailor Pay to Job Roles
Not all roles have the same responsibilities. The proposal suggests:
Frontline staff: flat bonuses
Mid-level staff: percentage-based increases
Executive staff: higher percentage increases + bonuses
This adds fairness and role-appropriate incentives.
Longevity-Pay
6. Add Non-Monetary Recognition
Longevity rewards can include:
extra vacation days
plaques, certificates, or awards
special privileges
These strengthen morale without increasing payroll costs.
Longevity-Pay
7. Offer Flexible Reward Options
Employees could choose between:
cash bonuses
added leave
retirement contributions
This personalization increases satisfaction.
Longevity-Pay
8. Cap Longevity Pay for Sustainability
To prevent budget strain, the plan recommends capping longevity increases after 20–25 years of service.
Longevity-Pay
9. Example Plans
Two sample models show how SCRTD could implement longevity rewards:
Plan 1 — Tiered Milestones
Years 5–7: 2% or $1,000
Years 7–10: 3% or $1,500
Years 10–15: 5% or $2,500
Years 15+: 3% increments or $2,500 every 5 years
Plan 2 — Annual Bonus Formula
A simple formula:
Years of tenure × $100, paid annually (e.g., every November).
Longevity-Pay
🧭 Overall Conclusion
This document provides SCRTD with a clear, flexible framework for establishing a Longevity Pay Program that:
strengthens employee loyalty
supports retention
enhances recruitment competitiveness
rewards dedication fairly and sustainably
It balances financial incentives with non-monetary recognition and offers multiple example structures to fit different budget levels....
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Healthy Longevity
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“Healthy Longevity – National Academy of Medicine “Healthy Longevity – National Academy of Medicine (NAM)”**
This PDF is an official National Academy of Medicine (NAM) overview describing one of the most ambitious global initiatives on aging: the Healthy Longevity Global Grand Challenge. It outlines the accelerating demographic shift toward older populations, the opportunities created by scientific breakthroughs, the threats posed by aging societies, and NAM’s worldwide plan to spark innovation, research, and policy transformation to ensure people live not just longer, but healthier lives.
The central message:
Human life expectancy has increased dramatically—but longevity without health creates massive social, economic, and healthcare burdens. The world needs bold innovations to extend healthspan, not just lifespan.
🌍 1. The Global Context of Aging
The document opens with striking demographic realities:
8.5% of the world (617 million people) are already age 65+.
By 2050, this will more than double to 1.6 billion older adults.
The number of people aged 80+ will triple from 126 million to 447 million.
Healthy longevity
These trends threaten to overwhelm economies, healthcare systems, and social structures—but also create unprecedented opportunities for scientific innovation and societal redesign.
🧠 2. The Challenge: Extending Healthspan
Despite medical breakthroughs, societies are not fully prepared for extended longevity.
NAM argues that:
We must not just live longer, but better—functional, productive, and mentally and socially healthy.
Innovations in medicine, public health, technology, and social systems will be essential.
Healthy longevity
The document calls for multidisciplinary solutions involving science, policy, economics, and community design.
🚀 3. The Healthy Longevity Global Grand Challenge
NAM introduces a massive, multi-year, global movement with four main goals:
⭐ 1. Catalyze breakthrough ideas and research
Support innovations in disease prevention, mobility, social connectedness, and longevity.
⭐ 2. Achieve transformative, scalable innovation
Turn groundbreaking research into real-world solutions that can improve lives globally.
⭐ 3. Provide a global roadmap for healthy longevity
Produce an authoritative report detailing economic, social, scientific, and policy opportunities.
⭐ 4. Build a worldwide ecosystem of innovators
Uniting scientists, engineers, entrepreneurs, health leaders, policymakers, and the public.
Healthy longevity
🏆 4. The Prize Competition Structure
The competition is divided into three phases, each escalating in scope:
1) Catalyst Phase
Seeds bold, early-stage ideas that could extend healthspan—across biology, technology, social systems, prevention, mobility, etc.
2) Accelerator Phase
Provides funding and support to develop prototypes or pilot projects.
3) Grand Prize
Awards a transformative, real-world innovation that significantly extends healthy human lifespan.
Healthy longevity
This framework encourages continuous innovation—from idea to global impact.
🧭 5. Developing the Global Roadmap for Healthy Longevity
An international commission will produce a major report identifying:
Global challenges and opportunities
Best practices from around the world
Social, behavioral, and environmental determinants
Healthcare and public health strategies
Science, engineering, and technology solutions
Equity, financing, policy, and implementation considerations
Healthy longevity
The roadmap will guide countries in redesigning systems to support healthier, longer lives.
🧬 6. A Multidisciplinary Global Effort
The initiative brings together leaders across:
Medicine & public health
Science & engineering
Technology & AI
Policy & economics
Social sciences
Private-sector innovation
This reflects NAM’s belief that healthy longevity is not just a medical issue—but a societal transformation.
Healthy longevity
🏛 7. About the National Academy of Medicine
The PDF closes by describing NAM:
Founded in 1970 (formerly the Institute of Medicine)
Independent, nonprofit, science-based advisory body
Works alongside the National Academy of Sciences and National Academy of Engineering
Provides guidance on global health, policy, and innovation
Healthy longevity
NAM leverages its global reputation to push healthy longevity as a top priority.
⭐ Overall Summary
This PDF is a clear, persuasive introduction to NAM’s Healthy Longevity Global Grand Challenge, a worldwide effort to drive innovation, transform aging, and ensure future generations enjoy longer, healthier, more productive lives. It highlights the urgency created by global aging trends, the need for breakthroughs across science and society, and the structure of a major international prize competition designed to accelerate progress.
Healthy longevity
If you want, I can also provide:
✅ A 5-line summary
✅ A one-paragraph plain-language version
✅ Bullet-point quick notes
✅ Urdu/Hindi translation
Just tell me!...
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5c3bc022-5cbf-42f3-9e07-e6a343b2ab21
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8684964a-bab1-4235-93a8-5fd5e24a1d0a
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kwzpadlx-9963
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xevyo
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The effect of water
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The effect of drinking water
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Theeffectofdrinkingwaterqualityonthehealthand long Theeffectofdrinkingwaterqualityonthehealthand longevityofpeople-AcasestudyinMayang,HunanProvince, China
JLu1,2 andFYuan1 1DepartmentofEngineeringandSafety,UiTTheArcticUniversityofNorway,N9037Tromsø,Norway
E-mail:Jinmei.lu@uit.no Abstract. Drinking water is an important source for trace elements intake into human body. Thus, the drinking water quality has a great impact on people’s health and longevity. This study aims to study the relationship between drinking water quality and human health and longevity. A longevity county Mayang in Hunan province, China was chosen as the study area. The drinking water and hair of local centenarians were collected and analyzed the chemical composition. The drinking water is weak alkalineandrichintheessentialtraceelements.ThedailyintakesofCa,Cu,Fe,Se,Sr from drinking water for residents in Mayang were much higher than the national average daily intake from beverage and water. There was a positive correlation between Ni and Pb in drinking water and Ni and Pb in hair. There were significant correlationsbetweenCu,KindrinkingwaterandBa,Ca,Mg,Srinthehairatthe0.01 level. The concentrations of Mg, Sr, Se in drinking water showed extremely significant positive relation with two centenarian index 100/80% and 100/90% correlation. Essential trace elements in drinking water can be an important factor for localhealthandlongevity.
1. Introduction Trace elements can not be manufactured by human body itself, and they must be taken from the natural environment. Water is a major source of trace elements necessary for the growth of biological organisms. The composition of trace elements in water has a significant impact on human health. Changes in drinking water and groundwater sources can lead to significant changes in health risk relatedwithtraceelements[1]. Insufficient or excessive trace elements in water can lead to the occurrence of certain diseases. Liu XJ et al. found that the concentrations of Cu, Fe, Sr, Ti and V in the water samples from area with high incidence of gastric cancer were significantly higher than those in the area with low incidence of gastric cancer [2]. Another research on the relationship between the concentration of trace elements in drinking water and gastric cancer showed that Se and Zn can significantly prevent the development of gastric cancer [3]. Kikuchi H. et al. studied the relationship between the levels of trace elements in water and age-adjusted incidence of colon and rectal cancer, and the results showed that the incidence ...
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Longevity Risk
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Longevity Risk
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The document is a formal technical comment letter The document is a formal technical comment letter submitted by the American Academy of Actuaries’ C-2 Longevity Risk Work Group to the NAIC Longevity Risk (A/E) Subgroup on December 21, 2021. It provides actuarial analysis and recommendations regarding the treatment of longevity reinsurance within NAIC’s developing capital and reserving framework—specifically as it relates to the proposed VM-22 principle-based reserving (PBR) requirements for fixed annuities.
Purpose of the Letter
The Academy responds to NAIC’s request for input on how longevity reinsurance contracts should be incorporated into:
C-2 Longevity capital requirements
VM-22 reserve calculations
The broader Life Risk-Based Capital (LRBC) framework
The objective is to ensure consistent, risk-appropriate treatment of longevity reinsurance as its market expands.
Key Points and Insights
1. Longevity reinsurance now explicitly falls within VM-22’s scope
The draft VM-22 includes longevity reinsurance in its product definition, meaning:
The reinsurer assumes longevity risk linked to periodic annuity payments.
Premiums from direct writers are spread over time.
Contracts may use net settlement (one-way periodic payments).
This inclusion enables a straightforward approach for capital calculations.
2. Reserve aggregation under VM-22 may simplify capital treatment
The Academy notes that aggregating longevity reinsurance with other annuity products:
Allows the existing C-2 capital factors to remain applicable.
May produce counterintuitive but appropriate results—e.g., longevity reinsurance can reduce total reserves if future premiums exceed benefit obligations.
A numerical illustration in the letter shows how aggregation can lower the combined reserve relative to stand-alone immediate annuity reserves.
3. Calibrating a new factor for reinsurance is currently not possible
The Academy explains that:
The 2018 field study, which calibrated current C-2 Longevity factors, lacked enough longevity reinsurance data.
Therefore, no reinsurance-specific factor can be developed yet.
It is reasonable to assume reinsurance longevity risk is similar to that of the underlying annuity liabilities.
4. Capital treatment for pre-2024 reinsurance contracts remains unresolved
Because VM-22 applies only to contracts issued after January 1, 2024, existing longevity reinsurance treaties could require:
Different reserving methods
A revised capital approach
This issue affects fewer companies but still requires regulatory attention.
5. Two possible future capital approaches are outlined
If VM-22 aggregation is not adopted (or if pre-2024 treaties use different reserving rules), NAIC may consider:
A) Keep the current C-2 factor applied to the present value of benefits.
Simple and consistent with existing RBC practice
But may conflict with Total Asset Requirement (TAR) principles
B) Develop an adjusted capital factor for longevity reinsurance.
More precise but complex
Hard to calibrate consistently across different treaty structures
6. Longevity reinsurance differs from life insurance in ways relevant to capital design
Key distinctions include:
Longevity reinsurance premiums are contractual obligations, often collateralized.
Under a longevity “shock,” premiums continue whereas in life insurance, a death event ends the need to pay premiums.
These differences may justify including gross premiums in reserves or capital calculations.
7. Ceded longevity risk must also be properly recognized
The letter recommends clarifying RBC rules so that:
Longevity risk transferred via reinsurance
Is reflected in the C-2 calculation
Similar to existing adjustments for modified coinsurance (Modco) reserves
Overall Purpose and Contribution
The letter provides actuarial expertise to help NAIC:
Integrate longevity reinsurance into the C-2 Longevity capital framework
Align reserves and capital with the economic reality of longevity risk transfer
Maintain consistency across new and legacy contracts
Avoid regulatory gaps as the longevity reinsurance market grows
The Academy expresses strong support for VM-22’s direction and offers to continue collaborating as NAIC finalizes its approach.
If you'd like, I can create:
📌 a simplified one-page summary
📌 a presentation-style briefing
📌 a comparison of all longevity-risk documents you provided
📌 an integrated cross-document meta-summary
Just tell me!
Sources...
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uivicpuk-0509
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ESSENTIAL STEPS TO HEALTH
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ESSENTIAL STEPS TO HEALTHY AGING
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“Essential Steps to Healthy Aging” is an education “Essential Steps to Healthy Aging” is an educational guide created by Kansas State University to teach people how to age in the healthiest, happiest, and most independent way possible. The document explains that while ageing is natural and unavoidable, our daily habits throughout life have a powerful impact on how well we age. It presents 12 essential lifestyle behaviors that research shows contribute to living longer, staying healthier, and maintaining quality of life into older age.
The file includes a leader’s guide, a fact sheet for participants, an interactive activity, and an evaluation form, making it a complete learning program for communities, workshops, or health-education sessions.
⭐ Core Message of the Document
Healthy aging is not about avoiding age—it’s about supporting the body, mind, and spirit across the entire lifespan.
The guide encourages people to take responsibility for their health and to make small but meaningful changes that promote lifelong well-being.
⭐ The 12 Essential Steps to Healthy Aging
(as presented in the fact sheet)
Essential-Steps-to-Health-Aging
Maintain a positive attitude
Eat healthfully
Engage in regular physical activity
Exercise your brain
Engage in social activity
Practice lifelong learning
Prioritize safety
Visit the doctor regularly
Manage your stress
Practice good financial management
Get enough sleep
Take at least 10 minutes a day for yourself
These steps address all areas of life—physical health, mental sharpness, emotional balance, relationships, safety, finances, and self-care.
⭐ Program Purpose
The guide aims to help people understand that:
Healthier choices today lead to a healthier and more independent future.
Positive habits at any age can improve longevity and quality of life.
Ageing well is possible through prevention, awareness, and small daily behaviors.
⭐ Contents of the Document
✔ 1. Leader’s Guide
Explains how to run the program, prepare materials, engage participants, and guide discussions.
Essential-Steps-to-Health-Aging
✔ 2. Essential Steps to Healthy Aging (Fact Sheet)
A clear, easy-to-read summary of all 12 steps and why they matter.
✔ 3. Activity: My Healthy Aging Plan
Participants write specific goals for each of the 12 steps, helping them create a personalized lifestyle improvement plan.
Essential-Steps-to-Health-Aging
✔ 4. Evaluation Form
Participants reflect on what they learned and choose which positive habits they plan to adopt going forward.
Essential-Steps-to-Health-Aging
⭐ Overall Meaning
The document teaches that healthy aging is achievable for everyone, regardless of age. By focusing on attitude, nutrition, physical health, mental activity, social connections, safety, finances, stress, sleep, and self-care, people can enjoy a longer life with greater independence, better health, and improved well-being.
It is both a practical guide and a motivational toolkit for anyone interested in ageing well....
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Provisional Life
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Provisional Life Expectancy Estimates for 2021
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This PDF is an official statistical report providi This PDF is an official statistical report providing provisional U.S. life expectancy estimates for the year 2021, produced by the National Vital Statistics System (NVSS). It gives a clear, data-driven picture of how life expectancy changed from 2020 to 2021, who was most affected, and what demographic disparities emerged.
The report focuses particularly on:
Total U.S. population life expectancy
Sex differences (male vs. female)
Racial/ethnic disparities among Hispanic, non-Hispanic White, non-Hispanic Black, and non-Hispanic American Indian/Alaska Native (AIAN) populations
Rising Longevity Increasing th…
🔶 Key Findings of the PDF
1. U.S. life expectancy fell significantly in 2021
Life expectancy at birth for the entire U.S. population fell to 76.1 years, a drop of 0.9 years from 2020.
This follows a historic decline in 2020, marking two consecutive years of major life expectancy loss.
Rising Longevity Increasing th…
2. Males experienced a larger drop than females
Male life expectancy (2021): 73.2 years
Female life expectancy (2021): 79.1 years
The gender gap widened to 5.9 years, the largest difference seen in decades.
Rising Longevity Increasing th…
3. All racial/ethnic groups experienced declines—but not equally
Every group showed reduced life expectancy in 2021, but the size of the decline varied:
Hispanic population experienced a sharp drop, continuing a historic reversal that began in 2020.
Non-Hispanic Black and non-Hispanic AIAN groups saw some of the largest cumulative losses over the two-year period.
Non-Hispanic White populations also experienced declines, though generally smaller than minority populations.
Rising Longevity Increasing th…
The report illustrates widening disparities in mortality across race and ethnicity.
4. COVID-19 remained the leading cause of the decline
Although the document does not list detailed causes of death, it emphasizes that COVID-19 continued to play the central role in reducing life expectancy in 2021, following the large pandemic-driven decline in 2020.
Rising Longevity Increasing th…
5. The report uses provisional mortality data
Because 2021 mortality files were not yet finalized at the time of publication, the results are based on:
Provisional death counts
Population estimates
Standard NVSS statistical methods
The report notes that figures may change slightly in the final annual releases.
Rising Longevity Increasing th…
⭐ Overall Purpose of the PDF
The goal of the document is to present a timely, preliminary statistical overview of how U.S. life expectancy changed in 2021, emphasizing:
the continued negative impact of COVID-19,
widening demographic disparities,
and the ongoing decline in longevity following the major 2020 drop.
⭐ Perfect One-Sentence Summary
This PDF provides a rigorous, data-based snapshot showing that U.S. life expectancy fell to 76.1 years in 2021—its lowest level in decades—with significant gender and racial/ethnic disparities and COVID-19 as the primary driver of the decline....
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Exploring Human Longevity
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Exploring Human Longevity
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Riya Kewalani, Insiya Sajjad Hussain Saifudeen Du Riya Kewalani, Insiya Sajjad Hussain Saifudeen Dubai Gem Private School, Oud Metha Road, Dubai, PO Box 989, United Arab Emirates; riya.insiya@gmail.com
ABSTRACT: This research aims to investigate whether climate has an impact on life expectancy. In analyzing economic data from 172 countries that are publicly available from the United Nations World Economic Situation and Prospects 2019, as well as classifying all countries from different regions into hot or cold climate categories, the authors were able to single out income, education, sanitation, healthcare, ethnicity, and diet as constant factors to objectively quantify life expectancy. By measuring life expectancies as indicated by the climate, a comprehensible correlation can be built of whether the climate plays a vital role in prolonging human life expectancy and which type of climate would best support human life. Information gathered and analyzed from examination focused on the contention that human life expectancy can be increased living in colder regions. According to the research, an individual is likely to live an extra 2.2163 years in colder regions solely based on the country’s income status and climate, while completely ruling out genetics. KEYWORDS: Earth and Environmental Sciences; Life expectancy; Climate Science; Longevity; Income groups.
To better understand the study, it is crucial to understand the difference between life span, life expectancy, and longevity. According to the United Nations Population Division, life expectancy at birth is defined as “the average number of years that a newborn could expect to live if he or she were to pass through life subject to the age-specific mortality rates of a given period.” ¹ When addressing the life expectancy of a country, it refers to the mean life span of the populace in that country. This factual normal is determined dependent on a populace in general, including the individuals who die during labor, soon after labor, during puberty or adulthood, the individuals who die in war, and the individuals who live well into mature age. On the other hand, according to News Medical Life Sciences, life span refers to “the maximum number of years that a person can expect to live based on the greatest number of years anyone from the same data set has lived.” ² Taking humans as the model, the oldest recorded age attained by any living individual is 122 years, thereby implicating that human beings have a lifespan of at least 122 years. Life span is also known as longevity. As life expectancy has been extended, factors that affect it have been substantially debated. Consensus on factors that influence life expectancy include gender, ethnicity, pollution, climate change, literacy rate, healthcare access, and income level. Other changeable lifestyle factors also have an impact on life expectancy, including but not limited to, exercise, alcohol, smoking and diet. Nevertheless, life expectancy has for the most part continuously increased over time. The authors’ study aims to quantify and study the factors that affect human life expectancy. According to the American Journal of Physical Anthropology, Neolithic and Bronze Age data collected suggests life expectancy was an average of 36 years for both men and women. ³ Hunter-gatherers had a higher life expectancy than farmers as agriculture was not common yet and
people would resort to hunting and foraging food for survival. From then, life expectancy has been shown to be an upward trend, with most studies suggesting that by the late medieval English era, life expectancy of an aristocrat could be as much as 64 years; a figure that closely resembles the life expectancy of many populations around the world today. The increase in life expectancy is attributed to the advancements made in sanitation, education, and lodging during the nineteenth and mid-twentieth centuries, causing a consistent decrease in early and midlife mortality. Additionally, great progress made in numerous regions of well-being and health, such as the discovery of antibiotics, the green revolution that increased agricultural production, the enhancement of maternal and child survival, and mortality from infectious diseases, particularly human immunodeficiency virus (HIV)/ AIDS, tuberculosis (TB), malaria, and neglected tropical diseases (NTDs), has declined. According to the World Health Organization (WHO), global average life expectancy has increased by 5.5 years between 2000 and 2016, which has been notably the fastest increase since the 1950s.⁴ As per the United Nations World Population Prospects, life expectancy will continue to display an upward trend in all regions of the world. However, the average life expectancy isn’t predicted to grow exponentially as it has these past few decades. Projected increases in life expectancy in Northern America, Europe and Latin American and the Caribbean are expected to become more gradual and stagnant, while projections for Africa continue at a much higher rate compared to the rest of the world. Asia is expected to match the global average by the year 2050. Differences in life expectancy across regions of the world are estimated to persist even into the future due to the differences in group incomes, however, income disparity between regions is forecasted to diminish significantly by 2050 ...
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