Meta-analysis of green tea drinking and the prevalence of gynecological tumors in women.

We performed a meta-analysis of the correlation between drinking green tea and the risk of female ovarian tumors. Related literature (2000-2010) was retrieved from PubMed, EMbase, CBMdisc, CNKI, and Wanfang databases. The relationship between the prevalence of ovarian cancer and drinking tea in cohort studies was explored. RevMan5.1.0 software was used for the meta-analysis. A total of 6 case control studies and cohort studies were included. A total of 9113 participants, 3842 cases, and 5271 control cases were included in our analysis. Our analysis indicates that drinking green tea can significantly decrease the risk of ovarian cancer (odds ratio = 0.81; 95% confidence interval = 0.73-0.89; P < .0001). Further research is needed to explore the relationship between drinking green tea and the risk of ovarian tumor in different groups of people and with different tea types and dosages.