side effects of eating too much vitamin D

Few foods contain vitamin D; For this reason, many people use supplements. Vitamin D is one of the essential nutrients needed for proper functioning of the body and immune system. In the United States, 40% of adults do not have enough of this vitamin. Vitamin D is involved in calcium absorption, immune function and protection of bones, muscles and heart health. However, with the exception of fatty fish, few foods are high in vitamin D.


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