Green Tea for Cancer Prevention: At Least 5 Cups Daily

Therefore 5 cups of green tea daily appears to be the minimum consumption level in order to achieve meaningful reduction of cancer risk. If you don't want caffeine, decaf green tea is an option, but it contains only about one third the EGCG content per cup compared to regular green tea. If you want a more steady, reliable intake of cancer-fighting polyphenols than brewed tea provides, then consider green tea supplements standardized to at least 250mg of EGCG per dose (according to the Japanese standard cup).