Phytochemicals are compounds which occur naturally in plants. The term is typically used to refer to the variety of chemicals which have been studied for their effects on human health. These include antioxidants, flavonoids, glucosinolates, isothiocyanates, polyphenols, among many others.

Health considerations

Individual phytochemicals and phytochemical groups have unique health effects.

Keep in mind

There are thousands of known and unknown phytochemicals, and relatively few of them have been studied. Results are often inconclusive and possibly contradictory from one study to the next. In general diets rich in fruits, vegetables, whole grains, and legumes are associated with better health.

May be found in

Fruits, vegetables, grains, seeds, nuts, legumes


American Cancer Society

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