benefits of green tea:cancer prevention:green tea and esophageal cancer prevention

Reduced risk of esophageal cancer associated with green tea consumption
Source: J Natl Cancer Inst. 1994 Jun 1;86(11):855-8
	A case-control study of 902 patients and 1552 control subjects found: statistically significant decreases in risk of esophageal cancer among tea drinkers were observed for both men (odds ratio = 0.43) and women (odds ratio = 0.40).

A case-control study on drinking green tea and decreasing risk of cancers in the alimentary canal among cigarette smokers and alcohol drinkers
Source: Zhonghua Liu Xing Bing Xue Za Zhi (Chinese Journal of Epidemiology). 2003 Mar;24(3):192-5
	A population based case-control study on benefit of green tea in prevention of gastric cancer, liver cancer, esophageal cancer among alcohol drinkers or cigarette smoker. Cancer cases: stomach - 206, liver - 204, esophageal - 218. Found: among alcohol drinkers, green tea drinking decreased risk of cancers: stomach - 81%, liver - 78%, esophageal - 39%; among cigarette smokers: stomach - 16%, liver - 43%, esophageal - 31%.(Article in Chinese)

Tea polyphenol (-)-epigallocatechin-3-gallate inhibits DNA methyltransferase and reactivates methylation-silenced genes in cancer cell lines
Source: Cancer Res. 2003 Nov 15; 63(22): 7563-70
	Green tea prevents cancer by inhibiting DNA methyltransferase and reactivating methylation-silenced genes. The benefitial effects of green tea were demonstrated with cell lines of colon cancer, esophageal cancer and prostate cancer