Alcohol and Biological Age
A guide to alcohol and biological aging covering what even light-to-moderate drinking does to epigenetic clocks and telomere length, how alcohol affects sleep quality and inflammation, and what the evidence suggests about whether any amount of alcohol is safe from a longevity perspective.
Social Connection and Longevity
An evidence-based look at social connection and longevity covering the epidemiological data linking social isolation to increased mortality, the biological pathways involved including inflammation and stress hormones, and what the research suggests about the protective effect of relationships.
The Longevity Exercise Protocol
A practical longevity exercise protocol covering how to combine Zone 2 cardio and resistance training for maximum healthspan, recommended weekly training structures, how to use VO2 max and other biomarkers to guide progression, and how exercise interacts with sleep and recovery.
The Connection Between Chronic Stress and Aging
A guide to chronic stress and biological aging covering how sustained cortisol elevation drives inflammation, epigenetic age acceleration, and telomere shortening, and the evidence behind interventions including meditation, nature exposure, and social connection.
Cold Exposure and Longevity
An evidence review of cold exposure and aging covering what cold plunges and cold water immersion actually do to the body including effects on brown fat, inflammation, and norepinephrine, the limits of current longevity-specific evidence, and realistic expectations.
Sauna and Longevity: What Finnish Research Tells Us About Heat Exposure and Lifespan
A guide to sauna use and longevity covering the Finnish cohort studies linking regular sauna bathing to reduced cardiovascular mortality, the proposed biological mechanisms including heat shock proteins and cardiovascular conditioning, and practical frequency and temperature recommendations.
Strength Training for Longevity
A guide to strength training for longevity covering the evidence for muscle mass as a predictor of lifespan and healthspan, how resistance training counters sarcopenia, the role of grip strength and other functional markers, and practical programming recommendations.
Sleep and Aging: How Poor Sleep Accelerates Biological Age
An evidence-based guide to sleep and aging covering how poor sleep quality and insufficient duration accelerate epigenetic aging, the specific mechanisms involved including clearance of amyloid and cortisol dysregulation, and science-backed strategies for improving sleep.
VO2 Max and Longevity
A guide to VO2 max as a longevity predictor covering the research showing its association with all-cause mortality, how it compares to other risk factors, the difference between aerobic capacity and fitness, and evidence-based strategies to improve it.
The Hallmarks of Aging and Senescence
A guide placing cellular senescence within the broader hallmarks of aging framework covering how it connects to genomic instability, mitochondrial dysfunction, and chronic inflammation, and why targeting senescence may have outsized effects on aging.
ApoB Explained: Why It Is a Better Predictor of Heart Disease Risk than LDL
An explainer on ApoB covering what it measures, why it is a more accurate predictor of cardiovascular disease risk than LDL cholesterol, what optimal levels look like from a longevity perspective, and how to lower it.
Zone 2 Cardio and Longevity
A guide to Zone 2 cardio and longevity covering what Zone 2 training is, the physiological mechanisms linking it to mitochondrial health and metabolic efficiency, the research on its relationship to VO2 max and all-cause mortality, and how to structure it in a training week.
Can You Reduce Cellular Senescence with Lifestyle Changes?
An evidence-based look at whether lifestyle changes can reduce cellular senescence covering the effects of regular exercise, caloric restriction, fasting, and specific dietary compounds on senescent cell accumulation and clearance.
How to Measure Your Senescent Cell Burden
A practical guide to measuring senescent cell burden covering existing biomarkers such as p16INK4a, beta-galactosidase activity, and SASP factors, how accessible these tests are today, their limitations, and what future testing may look like.
The SASP Explained: Why Senescent Cells Cause so Much Damage
An explainer on the senescence-associated secretory phenotype (SASP) covering what inflammatory signals senescent cells release, how the SASP drives systemic inflammation and tissue dysfunction, and why it is a central target for longevity interventions.
Fisetin for Longevity: The Senolytic Compound Hiding in Strawberries
A guide to fisetin as a longevity compound covering its classification as a senolytic flavonoid, the animal and early human evidence for its effects on senescent cells, natural food sources, supplementation considerations, and the current gaps in the research.
Senescent Cells and Aging
A guide to how senescent cells drive aging and disease covering the zombie cell concept, the role of the SASP in spreading inflammation, and the links between senescent cell accumulation and conditions like cardiovascular disease, neurodegeneration, and cancer.
How to Build a Longevity Blood Panel
A practical guide to building a personalized longevity blood panel covering which markers to prioritize at different life stages, how often to test, how to interpret results in the context of optimal rather than just clinical ranges, and how to track change over time.
What Is Cellular Senescence?
A plain-English explainer on cellular senescence covering what senescent cells are, how cells enter senescence through DNA damage and other triggers, why the body cannot clear them efficiently with age, and why their accumulation matters for longevity.
DHEA-S and Aging: What This Hormone Tells You About Biological Age
A guide to DHEA-S as a biological aging marker covering how levels decline predictably with age, what the research links low DHEA-S to including frailty and cardiovascular risk, optimal ranges for different ages, and what the evidence shows about supplementation.
Lipoprotein(a): The Genetic Risk Factor Most People Have Never Heard Of
An explainer on Lipoprotein(a) covering what it is, why it is largely genetically determined and unresponsive to most lifestyle changes, how elevated Lp(a) amplifies cardiovascular risk, and what limited interventions exist.
Fasting Insulin: The Longevity Marker Your Doctor Probably Is Not Ordering
A guide to fasting insulin as an underused longevity marker covering why it detects insulin resistance earlier than HbA1c or glucose, what optimal fasting insulin looks like, and why most standard blood panels omit it.
NAD+ Testing: How to Measure Your Levels and What They Mean for Aging
A practical guide to NAD+ testing covering why intracellular NAD+ is difficult to measure accurately, which tests exist, what declining levels mean for energy metabolism and DNA repair, and how to interpret and act on your results.
hs-CRP: The Inflammation Marker That Predicts Your Long-Term Health
A guide to high-sensitivity CRP as a longevity marker covering what chronic low-grade inflammation does to biological age, the difference between the longevity-optimal target and the clinical normal range, and evidence-based ways to lower it.
Homocysteine and Aging: What Your Levels Mean and How to Lower Them
A guide to homocysteine as a longevity biomarker covering its role in cardiovascular and cognitive aging, what elevated levels indicate, optimal ranges for longevity versus clinical normal ranges, and how to lower it through diet and supplementation.
IGF-1 and Longevity: The Goldilocks Hormone You Should Be Tracking
An in-depth guide to IGF-1 and aging covering its role in cellular growth and repair, the evidence for a U-shaped relationship with longevity (too high raises cancer risk and too low raises frailty risk), and what optimal levels look like.
What Are Longevity Biomarkers?
A comprehensive guide to longevity biomarkers covering what makes a biomarker relevant to aging, the major categories including metabolic, inflammatory, hormonal, and cellular markers, and how to use them together as a system.
Geroscience Explained: The New Science of Treating Aging as a Disease
An introduction to geroscience covering its central hypothesis that aging drives most chronic disease, the drugs and interventions it is studying, and how it is reshaping preventive medicine.
Functional Age vs Biological Age
An explainer on functional age covering physical performance metrics such as VO2 max, grip strength, and gait speed as aging biomarkers, how they compare to blood-based tests, and why they may better predict disability risk.
The Hallmarks of Aging
A plain-English guide to the hallmarks of aging covering all twelve hallmarks including genomic instability, telomere attrition, cellular senescence, and deregulated nutrient sensing, and how they interact to drive aging.
What Centenarian Studies Actually Teach Us About Living Longer
A synthesis of what centenarian studies reveal about longevity covering consistent patterns in metabolic health, inflammation, hormonal profiles, personality traits, and lifestyle habits seen across the longest-lived populations.
The Compression of Morbidity
An explainer on the compression of morbidity thesis covering the idea that disease and decline can be concentrated into a shorter period at the end of life, the evidence from population studies, and what it takes to achieve it.
How Doctors Measure Healthspan
A guide to how clinicians and researchers measure healthspan covering biomarkers such as VO2 max, grip strength, gait speed, cognitive function scores, and biological age tests, and how to use them together.
How to Extend Your Healthspan
An evidence-based guide to extending healthspan covering the five core pillars of exercise, nutrition, sleep, stress management, and social connection, with a summary of the research supporting each.
Healthspan vs Lifespan: Understanding the Difference
An explainer on the difference between healthspan and lifespan covering key definitions, how the gap between the two (years lived in poor health) has grown in modern populations, and what closing that gap requires.
How to Track Your Biological Age Over Time
A practical protocol for tracking biological age over time covering how often to retest, which platforms give comparable results across tests, and how to use trend data to evaluate lifestyle interventions.
Organ Age Testing: What It Means When Your Heart Brain or Liver Ages Faster
An explainer on organ-specific biological age testing covering how different tissues age at different rates, what organ age tests measure, and what it means when your heart, brain, or liver shows accelerated aging.
How to Lower Your Biological Age
A practical, evidence-ranked guide to lowering biological age covering interventions such as HIIT, the Mediterranean diet, sleep optimization, and stress reduction, with notes on the strength of evidence for each.
Can You Reverse Epigenetic Age?
A research-driven review of whether epigenetic age can be reversed covering the TRIIM, CALERIE, and related trials, what the data shows about reversibility, and the current limits of the science.
What Accelerates Biological Aging?
An evidence-based guide to the lifestyle and environmental factors that accelerate biological aging covering chronic stress, poor sleep, ultra-processed food, smoking, alcohol, and sedentary behavior.
What Is Biological Age?
A foundational guide to biological age covering what it means, how it differs from chronological age, the science behind it, and why it is a better predictor of health and longevity.
What Is an Epigenetic Clock?
An explainer on epigenetic clocks covering how DNA methylation is used to estimate biological age, the difference between first-generation and second-generation clocks, and what these tests can and cannot tell you.
.svg)
.avif)