| Primary vitamin deficiency is due mainly to inadequate intake of nutrients. This is especially so in pregnant and lactating women, pre‑school children and the under-privileged. Most people do not need to take vitamins daily if they eat three balanced meals. Fad diets are often associated with inherent vitamin deficiencies. There is no proven need to take large "mega" doses of vitamins daily especially since the intake of vitamins A, B, and D in large doses may be harmful. There is still no proof that the controversial practice of large daily doses of vitamin C will either prevent or alleviate the symptoms of the "common cold". There is no justification for buying expensive vitamins in the belief that they are better or more potent than less expensive brands. It should be noted that the RDA's (Recommended Dietary Allowances) found on the labels of vitamins are just guides to daily intake and include a surplus to provide for the variation in the requirements of all individuals. Thus the use of multivitamins as a panacea for all conditions, as is the current vogue for vitamin E, or as a substitute for proper eating habits and a balanced diet is not recommended. |
