Why are Doctors' Research Food nutrients better than isolated USP nutrients?
Human beings should get their nutrition from foods. "The body is designed to handle foods" . It is important to realize "that in nature vitamins are never isolated. They are always present in the form of vitamin-complexes" [2-5]. Vitamins are natural complexes which produce a variety of actions in the body whereas some isolated USP vitamins are analogues of vitamins which appear to have at least some of these activities . Food nutrients are complexed just as nutrients found in all foods, because they are food. USP vitamins are synthesized (according to strict federal standards), standardized chemical isolates (as listed in the United States Pharmacopoeia or the USAN and USP Dictionary of Drug Names) ; they are not food.
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