What Are Lipid Soluble Vitamins and Why Do You Need Them? Vitamins are organic compounds essential for the normal growth and functioning of the body. They are classified into two main categories: water soluble and fat soluble. Water soluble vitamins, including vitamin C and the B Lipid Soluble Vitamins Chemistry LibreTexts The role of vitamins in fish farming: growth performance, immunity, disease resistance, and body composition Fish Physiology and Biochemistry Springer Nature Link How Vitamins Are Classified and In The Body Vitamins regulate metabolism and energy by acting as enzyme cofactors. They're classified as fat soluble (A, D, E, K) or water soluble (B complex, C), affecting how Fat Soluble Vitamins and Water Soluble Vitamins Stomp On Step1