Vitamin D is a fat soluble vitamin that plays a role in many important functions. While it's best known for working with calcium in your body to help build and maintain strong bones, it also is involved in regulating the immune system and cells. Studies are showing that due to decreased sun exposure, many people are experiencing very low levels of Vitamin D.

The RDA for vitamin D is still listed as 200 IU per day. In the last few years, however this vitamin has racked up an impressive list of potential benefits including its role in the support of bone health as well as protection against some of our most debilitating disease processes. As a result of these investigations, it is now estimated that up to 85% of the population may be deficient in this important vitamin.

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