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Previous Volume 344:1867-1868 June 14, 2001 Number 24 Next

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To the Editor: Tsubono et al. (March 1 issue)¹ reported that the consumption of five or more cups of green tea per day was not associated with a decreased risk of gastric cancer in a prospective study in Japan. However, this study did not address a possible protective effect of consumption of very large amounts of green tea. Case–control studies in Japan^2,3 and China^4,5 have suggested that a protective effect against gastric cancer may be conferred only by consumption of eight or more cups of green tea per day.

In two Japanese studies, a decreased risk of gastric cancer was . . . [Full Text of this Article]

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