How your body works

Longevity: what actually adds healthy years, according to the evidence, and what does not

Life expectancy in Europe is about 81 years; healthy life expectancy is around a decade less, and that gap is where longevity lives. What the large cohorts say adds years (not smoking, movement, diet, weight, alcohol, sleep, blood pressure control, social ties), what the evidence does not support, and what to track over decades.

by Published 6 min read

In short: people in the EU live about 81 years on average and spend the last decade or so with significant illness; longevity research is mostly about closing that gap. The evidence from very large, long cohorts is consistent: not smoking, regular movement, a mostly plant-based diet, a healthy weight, low alcohol, enough sleep, blood pressure and blood sugar kept in range, and strong social ties together add roughly a decade of life and more of health. The evidence does not support supplements for longevity, consumer biological-age tests as a guide, or any protocol that promises to reverse ageing.

3D illustration: a long rising-then-steady curve on a frosted panel with small tiles along it: a running shoe, an apple, a crescent moon, two figures together and a book, plus an hourglass with mint sand

At a glance

Life expectancy, EUAbout 81 years (around 84 for women, 78 for men)
Healthy life yearsAround 62–64 at birth; the gap to life expectancy is years lived with disability
Largest effectsNot smoking; physical activity; diet quality; healthy weight; low alcohol; sleep; blood pressure and glucose in range; social connection
CombinedFive healthy habits at 50 are associated with roughly 12–14 extra years of life in US cohorts; similar in Europe
Not supportedSupplements for longevity in non-deficient people; biological-age tests as guidance; fasting or protocols sold as anti-ageing
What to trackBlood pressure, weight, activity, sleep, lipids, HbA1c, and the dates of screenings and vaccines, over years

Healthspan, not lifespan

The years that matter are the ones without disability; the same habits that add years add healthy years first.

Connection counts

Social isolation is associated with mortality on a par with smoking in large analyses; it is a health factor, not a soft one.

Decades, in one record

Longevity is slow; a record that keeps blood pressure, labs and habits for twenty years is the only way to see it.

Lifespan and healthspan

Life expectancy has risen for a century, mostly through clean water, vaccines, safer births, less smoking and better treatment of heart disease. Healthy life expectancy has risen more slowly, so the years lived with illness have grown. That is why most researchers now talk about healthspan: the goal is not to add frail years but to compress illness into a short period at the end. The habits that do this are the same ones that prevent the major diseases, which is not a coincidence: ageing is, in large part, the accumulation of those diseases.

What the evidence supports

Not smoking is the largest single factor. Physical activity, even moderate and started late, is next; fitness in midlife predicts survival strongly. Diet quality (mostly plants, little processed food) and a healthy weight travel together. Alcohol kept low; sleep of seven to nine hours; blood pressure, glucose and cholesterol kept in range, with treatment when needed, because untreated high blood pressure shortens life more than most people realise. Social ties and purpose: isolation and loneliness are associated with higher mortality in analyses covering millions of people. Education and income matter too, which is why longevity is also a public policy question. Together, people who hold most of these habits at 50 live about a decade longer than people who hold none, and most of that decade is healthy. See Disease prevention habits.

What the evidence does not support

Supplements: in people without a deficiency, trials of vitamins, antioxidants, omega-3 and the current wave of "longevity molecules" have not shown longer life; some have shown harm. Biological-age tests sold to consumers measure interesting things (methylation patterns, for instance) but are not validated to guide decisions for an individual, and the number moves with factors they cannot separate. Protocols that promise to reverse ageing, from extreme fasting to large supplement stacks, rest on animal studies or small, short human trials. Blue zones, the regions famous for centenarians, taught useful lessons about diet, movement and community, but some of the record-keeping behind the statistics has since been questioned, and the lessons are the same as the cohorts'.

Ageing itself

Cells accumulate damage, repair slows, the immune system weakens and inflammation creeps up with age; that is the biology behind the diseases. Research into slowing those processes is real and promising, but nothing has yet moved from the laboratory to a treatment that extends human life. What has moved is prevention: a 70-year-old today is, on average, healthier than one a generation ago, for reasons that are entirely unglamorous.

What to track, over decades

Blood pressure and weight; activity and sleep; lipids, glucose or HbA1c, kidney function from lab reports; vaccinations and screenings with their dates; and, for the people you care for, the same. Longevity is the one health topic where a twenty-year record matters more than any single reading, and where a record that follows you between doctors, countries and apps is the practical tool. Anpheros Daily keeps that record for you and your family, with the lab results, the blood pressure log and the daily check-in in one place.

This page explains how the body works; it does not diagnose or recommend treatments. For symptoms that worry you, talk to your doctor.

Key terms

  • Life expectancy: the average number of years a person is expected to live from birth or from a given age.
  • Healthy life years: the years lived without significant disability.
  • Healthspan: the period of life spent in good health.
  • Cohort study: research that follows a large group over years to see which factors predict outcomes.
  • Biological age: an estimate of ageing from biomarkers; not yet validated to guide individual decisions.

Sources

Frequently asked questions

What is the single best thing for longevity?

Not smoking. After that, regular physical activity, which also helps weight, blood pressure, sleep and mood.

Do longevity supplements work?

No trial in people without a deficiency has shown longer life from vitamins, antioxidants or the newer 'longevity' compounds, and some trials found harm. Supplements are for documented needs.

Are biological-age tests worth it?

Not yet as a guide to decisions. They measure real biology but are not validated for individuals, and the number shifts with factors they cannot separate. Blood pressure, lipids and HbA1c tell you more.

Is it too late to start at 65?

No. Activity started late still lowers mortality, blood pressure treatment prevents strokes at any age, and quitting smoking at 65 adds years.

Does loneliness really affect lifespan?

Large analyses associate social isolation and loneliness with higher mortality, on a scale comparable to well-known risk factors. Staying connected is a health behaviour.

What should I keep in my record for the long term?

Blood pressure, weight, activity, sleep, the main lab values (lipids, glucose or HbA1c, kidney function), vaccinations and screenings with dates, and the same for the people you care for.

Anpheros Daily

Try it in Anpheros Daily

Note how you sleep, eat, feel and move in Anpheros Daily, next to your lab results, and see the patterns over weeks.

This guide is for information and does not replace medical advice. For decisions about your health, talk to your doctor. In an emergency, call your local emergency number (112 in Europe).
Written by
The Anpheros team

Anpheros builds a medical record that the patient controls and can share with any clinic, on an HL7 FHIR R4 platform, based in the EU. These guides help you understand and organise your health; they do not replace your doctor.

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