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Where might your diet actually fall short?
Most people buy supplements by guesswork. This estimator looks at your eating pattern, sun exposure and life stage, then tells you which nutrients are commonly short in people like you — and, importantly, which ones are worth a blood test before you spend anything.
- About 90 seconds
- Nothing you enter is stored
- Estimates, not measurements
Question 1 of 5
Where are you?
Does any of this apply?
How do you mostly eat?
Sun, skin and season
Vitamin D comes mostly from sun on skin, which is why it's the most common gap in all three countries.
About you
Your likely gaps
Please read
- These are population-level patterns, not measurements of you. Two people with the same answers can have different blood levels.
- More is not better. Iron, vitamin A, vitamin D and selenium can all cause harm in excess; "test, then treat" is the rule for those.
- Supplements aren't regulated like medicines. Look for third-party testing marks (USP, NSF, Informed Choice) and avoid anything promising to cure or treat a condition.
- We don't sell supplements. Options marked Sponsored pay us a commission if you buy. That doesn't change the estimate above.