Chemistry

Vitamin D is an essential vitamin required by the body for the absorption of calcium, bone development, immune functioning, and alleviation of inflammation. Vitamin D deficiency can lead to rickets, a weakened immune system, increased cancer risk, poor hair growth, and osteomalacia. Excess vitamin D can cause the body to absorb too much calcium, leading to increased risk of heart disease and kidney stones. The current U.S. Daily Value for vitamin D is 600 IU (international units) and the toxicity threshold is thought to be 10,000 to 40,000 IU/day. 2 Sometimes vitamin D values are given in micrograms (mcg,μg), when this is the case remember that 1μg=40IU for Vitamin D. Vitamin D is oil soluble, which means you need to eat fat to absorb it. Natural foods high in vitamin D include fish oils, fatty fish, mushrooms, beef liver, cheese, and egg yolks. Vitamin D is also naturally made by your body when you expose your skin to the sun, and is called the sun-shine vitamin. In addition, vitami...