Objective       To evaluate the relationship between green tea consumption and risk of gastric cancer.        Methods       Cochrane Library

PubMed

Embase

CBM

CNKI

and VIP were searched with relevant terms (to Nov. 2013). Cohort study of green tea and gastric cancer risk was included. RevMan 5.2 software was used for statistical analysis.        Results       Twelve cohort studies met inclusion criteria were analyzed. The results of meta analysis of crude data indicated that the gastric cancer risk of the population with the highest intake of green tea had statistically significant difference with that with the lowest intake of green tea (RR=1.34

95%CI: 1.10-1.65

P=0.005). There was no statistical difference

however

when data was adjusted (RR=1.02

95%CI: 0.94-1.11

P=0.67). The results from subgroup analysis indicated that the highest intake of green tea could reduce the risk of gastric cancer among female participants.        Conclusion       Long time consumption of green tea may reduce the risk of gastric cancer for female participants

but not for male participants.