Vitamin D is a fat-soluble vitamin that is essential for optimal health. Only a handful of foods contain significant amounts of this vitamin. These include fatty fish, organ meats, certain mushrooms and fortified foods. However, unlike other vitamins that you can only get through your diet, vitamin D can also be made by your body when your skin is exposed to the sun. For this reason, vitamin D is technically considered a hormone. The limited availability of vitamin D in the human diet, combined with most people’s insufficient sun exposure, may explain why up to 41.6 percent of the U.S. population has deficient blood levels.
15 health benefits of vitamin D
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