ABSTRACT
Vitamins which are soluble in water are usually associated with body fluids. Vitamin C and the members of the vitamin B complex are classified as water-soluble vitamins. Ascorbic acid is the reduced form of vitamin C and dehydroascorbic acid is the oxidized form. The precise biochemical functions of vitamin C are not well defined; however, the vitamin does seem to be involved in many reactions in the body. Deficiency of vitamin C results in scurvy, a disease which is characterized by widespread capillary hemorrhaging. Thiamin functions in growth, energy production, promotion of a normal appetite and digestion, and maintenance of a functionally normal nervous and muscular system. Riboflavin is essential for growth, tissue repair, general good health and vigor, and integrity of the skin, eyes, and nerves. There is evidence that folic acid and vitamin B12 inadequacies are frequently observed in the elderly. Generally, the biotin content of the urine and feces is considerably greater than the dietary intake.'.
