Step 01Answer 21 questions
Tell us about your sleep, movement, food, and a few simple measurements. No lab work, and no account needed to start.
Biological Age Quiz
How old is your body, really?
Your birthday is one number. The way you have lived is another. Answer 21 quick questions and get an estimate of how old your body reads, based on your daily habits. It takes a few minutes.
- 2,000+ people have taken the quiz
- 21 questions, a few minutes
- An educational estimate, not a diagnosis
39
Biological age
A sample estimate. Your number comes only from your own answers.
What it measures
Your calendar age and your biological age are not the same thing.
Chronological age counts your birthdays. Biological age is a way of describing how your body is doing relative to that number. Two people born the same year can land in very different places, because sleep, movement, food, stress, and other daily habits add up over time.
The Biological Age Quiz turns your answers into a single, easy estimate. It looks at four areas that shape how you feel and function: metabolic, brain, muscle, and heart. You get a number you can act on, plus a simple read on where you are strong and where there is room to improve.
21
questions, answered in a few minutes
4
areas behind your score: metabolic, brain, muscle, heart
How it works
How it works, in three steps.
Step 01
Step 02Get your estimate
We turn your answers into a biological age estimate across four areas: metabolic, brain, muscle, and heart.
Step 03See where to focus
Your result shows where you are doing well and where small changes could help most. Keep it for yourself, or learn more from there.
A sample result, age 44
Here is what your result looks like.
Your result leads with one number, your estimated biological age, next to your calendar age. Below it, four scores show how metabolic, brain, muscle, and heart factors shape your estimate, so you can see your strengths and your best opportunities at a glance. This is a sample. Your numbers come only from your own answers.
Metabolic
Good
Brain
Good
Muscle
Strong
Heart
Focus
39
Biological age
5 years younger
The four areas
The four areas behind your score.
Metabolic
How efficiently your body turns food into steady, lasting energy.
Brain
How sharp, focused, and clear your thinking feels day to day.
Muscle
The strength and lean muscle that keep you mobile and capable over time.
Heart
How well your cardiovascular system handles everyday activity and effort.
FAQ
Common questions.
No. The Biological Age Quiz is an educational and entertainment tool, not a medical diagnosis or medical advice. Your result is an estimate based on how you answer. For anything about your health, talk to a qualified healthcare provider.
We take your answers across 21 questions and turn them into an estimate built from four areas: metabolic, brain, muscle, and heart. It is a lifestyle and biomarker proxy estimate, not a measurement of your actual biological age.
Yes, it is free, and there is no obligation. You can take the quiz, see your estimate, and stop there if you want.
We use your email to send your results. Vital Health is a longevity media company, and if you choose to opt in, we can connect you with longevity providers we work with. You decide whether to opt in. Full details are in our Privacy policy and Terms of service.
You get your estimate and a clear read on where to focus, plus the option to learn more. Vital Health is a media company, not a clinic, so there are no appointments or lab visits here. If you want, we can point you toward longevity providers and resources that fit what your result shows.