No association between green tea and prostate cancer risk in Japanese men: the Ohsaki Cohort Study

In a prospective study of 19 561 Japanese men, green-tea intake was not associated with a lower risk of prostate cancer (110 cases), the multivariate hazard ratio for men drinking >= 5 cups compared with < 1 cup per day being 0.85 (95% confidence interval 0.50-1.43, trend P=0.81).