Drinking tea or coffee and cancer risk

Coffee

Caffeine may worsen symptoms of fibrocystic breast lumps (a type of benign breast disease) in some women, but there is no evidence that it increases the risk of breast cancer or other types of cancer. The link between coffee and cancer of the pancreas, which got a lot of attention in the past, has not been confirmed by recent studies. There does not appear to be any link between coffee drinking and cancer risk.

Tea

Some researchers have suggested that tea might protect against cancer because of its antioxidant content. In animal studies, some teas (including green tea) have been shown to reduce cancer risk, but findings from human population studies are mixed. At this time, tea has not been proven to reduce cancer risk in humans.