A chemical substance required by the body is called a vitamin.
A vitamin is an organic compound that is essential in small quantities by the body for healthy body growth, metabolism, development and body function. Vitamins are present in little amounts in plant and animal foods and can also be produced synthetically. Deficiencies of some vitamins in the body can produce certain disorders such as the deficiency of vitamin D may cause rickets and osteomalacia. Types of vitamins include Vitamin A, B, C, D, E, and K.
