Vitamins are known as micronutrients because they are needed in small amounts. Vitamins help regulate many vital body processes. They work with enzymes by triggering specific chemical reactions that allow the digestion, absorption, metabolism, and use of other nutrients.
Contrary to popular belief, vitamins do not supply calories. Some, however, do speed up reactions that produce energy in body cells. Vitamins are classified into two groups: water-soluble vitamins and fat soluble vitamins. Their solubility determines cerrain characteristics: how they are absorbed and carried in the blood. whether they are stored in the body, and what may happen during food preparation