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Green Tea
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Gallstones and Biliary Tract CancersGreen tea lowers risk of gallstones and biliary tract cancers, suggests a large population-based, case-control study led by Ann Hsing of the National Cancer Institute, Bethesda, Maryland, and published in the International Journal of Cancer, June 2006. |
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Hsing's team gathered demographic, medical and dietary data from 627 individuals with biliary tract cancer, 1037 persons with gallstones, and 959 randomly selected controls in Shanghai, China. Among women, after taking account of age, education and body mass index, those who consumed at least one cup of tea each day for at least 6 months had a 27% reduced risk of developing gall stones, a 44% reduced risk of getting gallbladder cancer, and 35% reduced risk of bile duct cancer. Among men, most tea drinkers were cigarette smokers, which likely affected their results. Men's risk of biliary disease was lower with tea consumption, but the drop in risk was not considered statistically significant.
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