What do Vitamins do for the Body?

There are many types of vitamins and each one has a specific function. Generally speaking, vitamins are vital nutrients needed for growth, development, and overall metabolism of an organism. Specifically, vitamins act as catalysts and substrates in various biochemical processes of metabolism. Vitamins are not synthesized in sufficient quantities by the organism itself, so they must be obtained from the external environment, such as the food consumed by the organism.