May
05
Vitamin maintain animal body are necessary for normal physiological function of low molecular weight compounds. Once the lack of dietary vitamin, it will make the body physiological dysfunction, the emergence of various vitamin deficiencies. So vitamins are essential nutrients for life.
A wide variety of vitamins, usually divided into two categories according to their solubility, ie fat soluble vitamins (vitamin A, vitamin D, vitamin E, vitamin K), and water soluble vitamins (vitamin B family, and vitamin C).