In Your Personal Vitamin Profile, medical scientist Dr. Michael Colgan shows how individually tailored programs of vitamin and mineral supplements lead to better health and longer life.According to Dr. Colgan, no two people have the same nutritional needs. Consequently, an all-purpose one-a-day vitamin pill cannot guarantee optimum nutritional supplementation in any diet. And there are factors beyond diet that must be considered. For instance, a man who smokes twenty cigarettes a day may require as much as fifteen times the Recommended Daily Allowance of vitamin C to maintain efficient functioning of the immune system. A woman who takes birth control pills may require ten times the RDA of vitamin B12 to maintain normal functioning of the cardiovascular system.Dr. Colgan's Health and Performance Nutrient Supplement Program -- a vitamin and mineral plan geared to the individual -- has been successful in reducing the incidence of herpes, eczema, high blood pressure, and migraine headaches