The bad effects of vitamin D on the body
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.