Phytochemicals are components acting individually, additively or synergistically, usually as a component of whole food, that have the characteristics of providing protective, preventative and possibly curative roles in the pathogenesis of cancer and other chronic disease progressions. Nutraceutical is a term used to describe beneficial phytochemicals. The mechanisms of action of nutraceuticals may be one of several. Free radical scavenger and antioxidant nutraceuticals can nullify damage by any number of biochemical mechanisms, but some also exert benefit by enhancing immune function.
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