Green Tea and Stomach Cancer Death in Japan
Author Information
Author(s): Hoshiyama Y, Kawaguchi T, Miura Y, Mizoue T, Tokui N, Yatsuya H, Sakata K, Kondo T, Kikuchi S, Toyoshima H, Hayakawa N, Tamakoshi A, Ohno Y, Yoshimura T
Primary Institution: Showa University School of Medicine
Hypothesis
Does green tea consumption provide protection against stomach cancer death?
Conclusion
The study found no association between green tea consumption and the risk of stomach cancer death.
Supporting Evidence
- Stomach cancer is a leading cause of cancer death in Japan.
- Previous studies suggested a protective effect of green tea against stomach cancer.
- This study is the largest prospective study on this topic.
Takeaway
Drinking green tea doesn't seem to help prevent stomach cancer, even though many people think it does.
Methodology
The study used Cox proportional hazards regression analysis to evaluate the relationship between green tea consumption and stomach cancer death.
Potential Biases
There is a potential for over-reporting of green tea consumption among those who drink more.
Limitations
About 10% of subjects were excluded due to missing data on green tea consumption, which could affect the results.
Participant Demographics
Participants included 30,370 men and 42,481 women aged 40-79.
Statistical Information
Confidence Interval
95% CI: 0.5–2.9
Digital Object Identifier (DOI)
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