Information on the latest vitamin D news and research.

"The well publicized recent studies mostly dealt with giving subjects 500 to 800 units of vitamin D. I have drawn 25OH levels on several thousand people who were taking these amounts in multi-vitamins or calcium pills, and practically all of them were still less than 32 ng, another words, vitamin D insufficient."

Vitamin D deficiency

Am I deficient in vitamin D?

How to know if you get enough

How do I get the vitamin D my body needs?

How to get sun safely and supplement effectively

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