Vitamin D: October to April — a framework by Ole Wang

Hand-drawn diagram of framework 205, Vitamin D: October to April: For bones and health. Not for performance. — Framework 205 · in one look

How to use it

In Denmark, the official advice is 5–10 µg a day from October to April. It's for bones and health, not performance: supplements raised blood levels but didn't add strength. No megadoses without a blood test and a doctor.

How sure we are

S Evidence: strong. Large trials or many studies, pointing the same way.

E Evidence: built from practice. What works for coaches and practitioners. Labelled that way.

Sources

Farrokhyar et al. 2015 · Han et al. 2024 (meta-analyses) · Fødevarestyrelsen (Danish advice).

Not medical, legal or financial advice.

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