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"Phytochemicals are non-nutritive plant chemicals that have protective or disease preventive properties. There are more than thousand known phytochemicals. It is well-known that plant produce these chemicals to protect itself but recent research demonstrate that many phytochemicals can protect humans against diseases. Some of the well-known phytochemicals are lycopene in tomatoes, isoflavones in soy and flavanoids in fruits. Phytochemicals are not essential nutrients and are not required by the human body for sustaining life."

Source: http://www.phytochemicals.info / - check it out, it's got lots more information on the uses of, effects, where they occur in food etc

also: http://ohioline.osu.edu/hyg-fa ct/5000/5050.html - details the most researched phytochemicals, their benefits and where / what foods they're found in.

Learn more about this author, Vanessa Fagan.
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