Organic compounds all contain the carbon atom.
Vitamins occur in small amounts in many foods and are widely dispersed in our food supply.
Vitamins are necessary for normal metabolic functioning of the body. They form a part of enzymes to help complete chemical reactions in the body and are components of hormones. Classic deficiency, is rare in the United States due to the abundance of food. Therefore, in recent times, our attention has shifted from treating deficiency to optimizing health through vitamins.