How This Quiz Works
This quiz estimates your biological age from ten short questions covering the lifestyle factors with the strongest evidence link to aging: exercise frequency, diet quality, smoking, sleep, stress, and fruit and vegetable intake. Each answer is scored, and the total is mapped to an estimated age difference from your calendar age.
The scoring model is informed by published research on lifestyle and biological aging — including epigenetic aging studies (Levine et al., 2018; Horvath, 2013) and biological age predictors (Jylhava et al., 2017) — adapted into a simple questionnaire you can complete in about two minutes.
Your result is a screening estimate, not a clinical measurement. For a more detailed analysis, use our full Biological Age Calculator, which adds body measurements such as height, weight, and waist circumference.
How to Read Your Result
Your result shows an estimated biological age compared with your calendar age. A biological age lower than your calendar age suggests your habits are supporting healthy aging; a higher one points to lifestyle factors that may be accelerating it.
Treat a single result as a starting point, not a verdict. Retake the quiz every 3–6 months after changing your exercise, diet, or sleep routine, and watch the trend — improvement over time is what matters most.
Frequently Asked Questions
How accurate is this biological age quiz?
It produces a screening estimate based on lifestyle factors, not a clinical measurement. Accuracy depends on how honestly you answer — for a more precise estimate, add body measurements in the full Biological Age Calculator.
Do I need to measure anything or give blood?
No. The quiz is questionnaire-only: it takes about two minutes and requires no measurements, blood tests, or registration.
How often should I take it?
We recommend every 3–6 months. Lifestyle changes take weeks to months to show up, so test at a steady interval and watch the trend rather than single scores.
Is my data collected?
No. Everything runs in your browser — your answers never leave your device.
How is this different from a blood-based biological age test?
Blood tests measure biomarkers such as DNA methylation directly. This quiz estimates the same concept from lifestyle questions — convenient and free, but less precise.
This quiz provides estimates for educational purposes only. It is not a medical device or diagnostic tool, and it cannot replace a clinical assessment. Consult a healthcare provider for advice about your health.