Green tea may help lower the risk of several diseases. However, the optimal amount to drink may depend on the disease. Oral cancer: In a large observational study, women who drank three to four cups of green tea daily were the least likely to develop oral cancer.
Prostate cancer: A large observational study found that men who drank
five or more cups of green tea daily had a lower risk of developing prostate
cancer, compared to those who drank less than one cup per day.
Stomach cancer: Another large observational study showed a reduced
risk of stomach cancer in women who consumed five or more cups of green tea per
day.
Breast cancer: Two observational studies showed reduced
recurrences of breast cancer in women who drank more than three cups of green
tea daily.
Pancreatic cancer: One observational study found that drinking five or
more cups of green tea per day was linked to a decreased risk of pancreatic
cancer.
