How to lower your biological age

Written by Steve Fayzulayev. Clinically reviewed by Naomi Fayzulayev, FNP-C, MSN.

Last reviewed 2026-11-09. See our editorial policy and methodology.

A score can help you organize questions about your health, but it cannot tell you how long you will live or prescribe a plan. Start with the results you have and decide on next steps with your clinician.

First, check what the result includes

Look beyond the composite at the dials and measurements that contributed to it. Missing measurements are not normal results, and a thin dial is a less complete picture.

Check the test name, units, date and entry for any result that surprises you. The book-based score is educational; its ranges are not clinical diagnoses or individualized treatment targets.

Bring questions to your clinician

Ask which findings matter for your history, symptoms and medications; whether existing results are sufficient; and what, if anything, needs prompt follow-up. A single concerning result should not be ignored while waiting for a trend.

Do not change prescribed medication, start supplements, or delay care because of a calculator score. Your clinician can help you decide whether a change, referral or repeat test is appropriate.

Choose a manageable next step

Consider one change that fits your circumstances, such as a sustainable movement routine, more consistent sleep, or a food choice you can maintain. Start within your abilities and ask a clinician about activity limits when needed.

The most actionable issue is not necessarily the lowest-scoring dial. Symptoms, an abnormal lab result, existing conditions and personal goals may matter more.

Plan follow-up, not a fixed schedule

Ask whether to repeat a measurement, when, and under what preparation conditions. Timing depends on the marker and your clinical situation; do not postpone recommended care to match a generic calendar.

When comparing assessments, note changes in the inputs, testing conditions and medications. A change in the score is not proof that your biological age or health risk changed by the same amount.

Use the related guides

Use the links below to understand a specific result, prepare a lab discussion list, or explore general health habits. Bring your actual report and questions to your clinician.

Score yourself free — no account needed →

Frequently asked questions

How to reverse biological age?

A score can help you organize questions about your health, but it cannot tell you how long you will live or prescribe a plan. Start with the results you have and decide on next steps with your clinician.

What does this guide cover?

This guide covers: First, check what the result includes; Bring questions to your clinician; Choose a manageable next step; Plan follow-up, not a fixed schedule; Use the related guides.

All guides

Sources and further reading

Not medical advice. These are longevity-optimised reference ranges, which are deliberately stricter than standard clinical "normal" values. A value outside them does not mean you have a disease. Speak to a qualified healthcare professional before changing medication, supplements or training. Full disclaimer.
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How to reverse biological age?

A score can help you organize questions about your health, but it cannot tell you how long you will live or prescribe a plan. Start with the results you have and decide on next steps with your clinician.

What does this guide cover?

This guide covers: First, check what the result includes; Bring questions to your clinician; Choose a manageable next step; Plan follow-up, not a fixed schedule; Use the related guides.

What is biological age?

Chronological age counts birthdays. Biological age estimates how old your body appears to be functioning, based on measurable biomarkers. Two people born the same year can differ by a decade or more in vascular stiffness, insulin signalling or cardiorespiratory fitness. Biological age makes that gap explicit — and unlike your birthday, it can move in either direction.

How is the Longevity Score calculated?

Each biomarker you enter is scored against longevity-optimised reference ranges and grouped into one of eight dials. Every dial produces its own biological age, and those are combined using fixed weights into a single composite, then expressed as a Longevity Score from 0 to 100. The weighting reflects how strongly each system predicts healthspan: structural and vascular carry the most, hormonal the least.

Do I need all 53 biomarkers?

No. The short form contains a subset of scoring inputs plus context-only fields, and you can leave any of them blank. It is not a recommendation to obtain tests. Missing values are excluded from the calculation — never treated as zero or as 'normal'. A dial with no scored data is dropped entirely and the remaining weights renormalise.

What can I measure without a blood test?

Some inputs can be measured without bloodwork. Blood pressure needs a home cuff and waist-to-height needs a tape measure. Wearable estimates vary; the floor-based sitting-rising test carries a fall risk and should only be attempted if safe.

Is this an anti-aging calculator? Is it a healthspan calculator?

Both terms describe what this tool does, and which one fits depends on what you are asking. "Anti-aging" is the term most people search, and loosely means anything aimed at slowing or reversing age-related decline — this tool fits that description if you score your dials and act on what you find. "Healthspan calculator" is the more precise term: healthspan is the number of years lived without serious chronic disease or disability, and that cannot be measured directly, so this tool scores eight systems that each function as an early-warning proxy for it. Either way, the method is the same: real biomarkers, published thresholds, no vanity-metric framing.

Why don't you have a quick quiz that skips biomarkers entirely?

Several popular tools ask only about habits — exercise days, sleep hours, smoking, diet quality — and return a single precise-looking age. We looked at the research behind that approach and chose not to build it. Published studies do show real, individually-measured links between specific habits and epigenetic age acceleration, but those effect sizes come from different study populations, different DNA-methylation clocks and different measurement units. Adding them together into one number is not something the underlying research actually supports — it produces a precise-looking result built on an imprecise method. Our dials use direct physiological measurements instead: a real blood pressure reading, a real VO₂ max, a real ApoB value. Several dials score from home-measurable data alone with no quiz-guessing involved — see what you can measure without a blood test, above.

Why are your 'optimal' ranges stricter than my lab's normal range?

Standard reference ranges describe what is common in a general population, which now includes a great deal of metabolic dysfunction. They are tuned to flag disease, not to identify what is optimal for a long healthspan. A fasting insulin of 20 µIU/mL sits inside most labs' normal range and is strongly associated with insulin resistance. This tool uses longevity-optimised thresholds instead, so a flag here means room for optimisation — not a diagnosis.

Why not just upload my labs to ChatGPT?

For understanding a single result, do — a frontier chat model is genuinely good at that, often clearer than most medical sites, and it handles markers no fixed tool covers. The limitation is different from the one most people assume. A language model produces a plausible response rather than a computed one, so the same panel can score differently on different days. That is fine when exploring an idea and disqualifying when measuring change, because you cannot tell how much of a difference is you and how much is the method. Use both: a chat model to understand, a fixed instrument to track.

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