Vitamins can be generalized as a group of organic substances, present in minute amounts in natural foodstuffs, that are essential to normal metabolism however when insufficient amounts are present in the diet then a person may develop deficiency diseases
Vitamins are organic compounds made use of by the human body for a large number of biochemical functions such as functioning as antioxidants, cofactor bio-molecules, hormones, etc. Vitamins by necessity have to be obtained through diet as they cannot be synthesized in sufficient quantities by the body. Vitamins are classified by their biological and chemical activity, not their structure. There are two classes of vitamins, water soluble and fat soluble.