What is biological age?

Biological age is an estimate of how old your body seems based on your health and habits, rather than the number of years since you were born. Two people the same chronological age can have very different biological ages.

How is biological age calculated here?

We start from your real age and add or subtract years based on lifestyle factors — smoking, physical activity, body weight, sleep, diet, alcohol, stress and resting heart rate — using effect sizes drawn from large published mortality studies. Every adjustment is shown so you can see exactly what moved your number.

Is this a medical test?

No. It is an educational estimate, not a blood-biomarker test or medical advice. For anything about your real health, talk to a doctor.

{{ c.yourBmi }}: {{ bmiVal }}

{{ b.realSentA }}{{ ageVal }}{{ b.realSentB }}{{ bioAgeVal }}{{ b.realSentC }}{{ bioNote }}

Smoking — smokers lose roughly a decade of life; the effect shrinks after quitting. Jha et al., NEJM 2013.
Physical activity — leisure activity adds up to ~4.5 years of life expectancy. Moore et al., PLoS Medicine 2012.
Weight, diet & alcohol — part of the five habits linked to 12–14 extra years. Li et al., Circulation 2018.
Sleep, stress & resting heart rate — established markers of biological aging and cardiovascular risk.

{{ c.eduOnly }}{{ c.dataSources }}.

⏳

🌱

❤️

{{ b.h1a }}{{ b.h1em }}{{ b.h1b }}

{{ c.details }}

{{ b.movingTitle }}

{{ b.methodTitle }}

{{ c.moreTools }}