Vitamins are wonderful nutrients that are available from natural sources. A person could get all his vitamin requirements by eating enough of fruits and vegetables. Another wonderful source of vitamins is milk which is followed by eggs. Vitamins do not add to the weight of an individual. These nutrients are totally free of calories. A person would require the vitamins for all the vital functions of the body. The vitamins also provide good resistance against diseases by increasing the immunity of the person. A good intake of vitamins would also delay the process of ageing as it would keep the free radicals at bay.