Breast cancer and green tea intake:
A case-control study in Southeast China evaluated green tea drinking and breast cancer risk among 2018 women aged 20-87 years (1009 with breast cancer, 1009 age-matched controls). Compared to non-tea drinkers, women consuming up to 249 g/year of green tea had a 13% reduced risk (odds ratio [OR]=0.87) of developing breast cancer. Additionally, women drinking 250-499 g/year had a 32% reduced risk, women drinking 500-749 g/year had a 41% reduced risk and for women drinking at least 750 g/year of green tea had a 39% reduced risk. Therefore it appears that greater tea consumption is associated with a decrease in breast cancer risk. (18)