Vitamin
Vitamin D
Vitamin D is a fat-soluble vitamin that the skin makes in sunlight and that also comes from a few foods. Its two main forms are D2 and D3.
Effects by health goal
Open an effect to see the studies behind its rating. Bars show the size of the effect; the letter grades the evidence.
Bone & Joint1 effect
No study is linked to this rating.
Adverse findings
Ratings where the reported effect was unfavourable.
No study is linked to this rating.