Researchers from Japan evaluated whether green tea consumption provides protection against stomach cancer death.
A total of 30,370 men and 42,481 women (aged 40-79 years), from the Japan Collaborative Study for Evaluation of Cancer Risk, were included.
Relative risks were calculated using Cox proportional hazards regression analysis, and were adjusted for age, smoking status, history of peptic ulcer, family history of stomach cancer, along with certain dietary items.
| The study included almost 73,000 individuals.
| British Journal of Cancer |
The authors calculated the risks associated with drinking 1-2, 3-4, 5-9, and 10 or more cups of green tea per day.
Relative to those of drinking less than 1 cup per day, the risks were found to be 1.6, 1.1, 1.0, and 1.0, respectively, in men.
In women, the respective risks were 1.1, 1.0, 0.8, and 0.8.
Dr Y. Hoshiyama, of the Showa University School of Medicine, Shinagawa, Tokyo, concluded on behalf of fellow authors, "We found no inverse association between green tea consumption and the risk of stomach cancer death."