What is longevity? The science of living longer and healthier

Longevity literally means living long, but in practice it's mostly about staying healthy for as long as you live. Not just getting old, but getting old with energy and without unnecessary complaints. That distinction, between how long and how well, is the heart of the whole idea.

This article explains what longevity is, the difference between lifespan and healthy years, and which blood values often come up alongside it.

What is longevity?

Longevity is an umbrella term for everything to do with living longer and healthier. It combines lifestyle, prevention and sometimes measurements of how your body is doing. It's not a medical treatment and not a promise, but a way of looking at health over the long term.

The term has become popular, partly through books and podcasts. That also means there's a lot of noise around it.

So stay critical: many longevity claims go beyond what the research can currently support.

Healthspan versus lifespan

Lifespan is how long you live, healthspan is how many of those years you spend in good health. Longevity is mostly about the second. Twenty extra years with lots of complaints is something else than twenty extra active years.

Researchers describe ageing as a sum of processes, summarised as the "hallmarks of aging" (López-Otín et al., Cell, 2013). Those processes help shape how your healthspan develops.

The pillars of longevity

Longevity leans on a few well-known lifestyle factors. No secrets, but things that recur consistently in research on healthy ageing.

The RIVM stresses that a healthy lifestyle relates to a lower risk of several chronic conditions. That's no guarantee for the individual, but it's a clear thread at population level.

Which blood values fit longevity?

There's no single longevity blood value. But markers are mentioned that say something about inflammation, blood sugar and fats. Think hs-CRP, HbA1c and an extended lipid profile.

Athletes who link performance and recovery to blood values often find leads in blood values and longevity for athletes. If you want to look wider, an extended health checkup maps a range of those values.

How this relates to your biological age you'll read in the pillar biological age. And the narrower metabolic angle is in what is metabolic age.

Longevity and prevention: what's the link?

Longevity and prevention sit close together. Prevention mainly looks at avoiding disease; longevity adds the question of how to keep functioning well for as long as possible.

In practice the advice overlaps a lot. Movement, not smoking and keeping an eye on your blood pressure and blood sugar show up in both stories.

What longevity sometimes adds is the idea of measuring and tracking. Not to chase numbers, but to see a line instead of one snapshot.

Stay level-headed about it. A nice number is no guarantee, and a less nice one is no diagnosis. It's about the direction over years, not one result.

Frequently asked questions

Is longevity the same as anti-aging? Not quite. Anti-aging often focuses on appearance, longevity on healthy years and function.

Do you need expensive supplements for longevity? Most evidence points to ordinary lifestyle factors, not pricey products. Be critical of big promises.

From what age is longevity relevant? There's no fixed starting age. Many people get curious around 30 or 40, but lifestyle counts at any age.

Can you measure longevity in your blood? Not as a single number. But markers for inflammation, blood sugar and fats together give an impression.

What you can do with this

Longevity is no miracle, but a way to think ahead about your health. Start small: movement, sleep and a few blood values to track. Doubt a result or have complaints? Discuss it with your GP.

Every blood test result at Vitalcheck includes a professional assessment by a BIG-registered doctor. A blood value is not a diagnosis: always discuss symptoms and treatment decisions with your GP.

References

• López-Otín C, Blasco MA, Partridge L, Serrano M, Kroemer G. The hallmarks of aging. Cell. 2013. PMID: 23746838.
• RIVM. Public health and care: healthy lifestyle and chronic disease. Accessed 2026.
• Ferrucci L, Fabbri E. Inflammageing: chronic inflammation in ageing, cardiovascular disease, and frailty. Nature Reviews Cardiology. 2018. PMID: 30065258.