How old is your body, really?
Eight questions about the habits that long-term studies tie to lifespan. Your health age appears instantly, with the exact changes that buy years back.
Answer all eight and your number appears instantly.
Common questions
What is a health age or biological age?
Your calendar age counts birthdays; your health age reflects how your habits compare with what long-term population studies link to longer or shorter life. Smoking, movement, sleep, blood pressure, weight, alcohol, diet and social connection are the levers that matter most, and this calculator turns them into a single number you can act on.
Is this as accurate as a biological age blood test?
No, and it does not pretend to be. Epigenetic and blood-marker tests measure biology directly; this estimates from the lifestyle factors that drive most of the preventable difference in lifespan. The habits it scores are also the ones those expensive tests usually tell you to change anyway.
Can I actually lower my biological age?
The habits behind this score are all movable, and the studies behind them show risk falling after people change: quitting smoking, moving most days, sleeping 7 to 9 hours, treating high blood pressure and keeping weight in range each shift long-term risk within months to years.
What lowers biological age fastest?
For a smoker, quitting, by a wide margin. After that, the step from no exercise to regular brisk walking, treating untreated high blood pressure, and fixing chronically short sleep carry the largest, best-evidenced gains.
Want the real numbers behind the estimate?
The Health Review reads your labs, history and lifestyle together and maps your risk over the next ten years, in writing.