Harvard Health Letter

How much vitamin D should I take?

Ask the doctor Q. Iím confused about vitamin D. How much should I take? A. Thereís considerable controversy as to whether most people should take a vitamin D supplement at all. Most of the vitamin D in our bodies is made by our skin, when it is exposed to sunlight. In contrast to most other vitamins, we donít get much vitamin D in our diet. Authorities recommend, however, that children…

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