Vitamin is one of a few fat soluble vitamins that are needed for life and health. Vitamin A plays a critical role in : Vision Epithelial differentiation Expansion Reproduction Pattern formation during embryogenesis Bone development Hematopoiesis Brain development Immunological reply function.
There are a lot of people who do not have enough natural vitamin sources in their diet and therefore suffer from a deficiency of one or more vitamins. Obviously, it is possible to buy vitamin supplements to help overcome any deficiencies but for the majority of people it should be possible for them to obtain the majority of their recommended daily allowance of vitamins from natural vitamin sources. The key to gaining the correct amount of vitamins from natural vitamin sources is to eat a healthy and balanced diet.