
Polyphenols are a group of chemical substances found in plants, characterized by the presence of more than one building block per molecule. Research indicates that polyphenols may have antioxidant characteristics with potential health benefits. They may reduce the risk of cardiovascular disease and cancer.
Notable sources of polyphenols include berries, tea, beer, grapes/wine, olive oil, chocolate/cocoa, coffee, walnuts, peanuts, pomegranates, and other fruits and vegetables. High levels of polyphenols can generally be found in the fruit skins.