Vitamins
Vitamins are organic nutrients that are categorized based on their solubility in water and The fat-soluble vitamins
The water-soluble vitamins are vitamin C and all of the B vitamins.
The fat-soluble vitamins are vitamins A, D, E, and K.
Vitamins are required to perform many functions in the body, such as making red blood cells, synthesizing bone tissue, and playing a role in normal vision, nervous system function, and immune function.
Vitamin deficiencies can cause severe health problems and even death. For example, a deficiency in niacin causes a disease called pellagra.