"My takeaway from this is that if it is true that the optimal value for “vitamin d” is not a specific number but rather an approximation or a range, such as 50 ng/ml + or – 10 ng/ml and varies substantially based on genetic variation, skin type, etc., there is little empiric significance in getting “precise” measurements."
Join the discussion
Vitamin D deficiency
How to know if you get enough
How to get sun safely and supplement effectively
If you have a question about vitamin D and you can't find an answer on the Vitamin D Council website, then send us your question!
Ask a question