Vitamin D and the Immune System | D2 & D3
Vitamin D is a family of fat-soluble vitamins naturally present in many foods. Some people call it the “sunshine vitamin” because the body produces this compound when the skin is exposed directly to the sun. Humans typically consume two types of vitamin D: D2 and D3. Vitamin D3 comes from animal-sourced foods and D2 is man-made, for the most part. Both types are available as over-the-counter supplements, but studies suggest that vitamin D3 might be better for improving vitamin D...
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