Green Tea Polyphenols May Cause Liver Damage In High Doses

... The polyphenols present in green tea plants or herbs could pose health risks to humans if extracted and packaged in highly concentrated doses, says a new University of Toronto study published in the current issue of Free Radical Biology and Medicine. In small mammals, green and black tea phenolics -- a class of chemical compounds found in plants that include polyphenols -- have been proven to contain antioxidants that help reduce the risk of cancer and cardiovascular disease... click link for more info. ...