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 > or =5 cups compared with <1 cup per day being 0.85 (95% confidence interval 0.50-1.43, trend P = 0.81).
Publication
British journal of cancer, 2006, Vol 95, Issue 3, p371