Green Tea and Lung Cancer Risk
Author Information
Author(s): Li Q, Kakizaki M, Kuriyama S, Sone T, Yan H, Nakaya N, Mastuda-Ohmori K, Tsuji I
Primary Institution: Tohoku University Graduate School of Medicine
Hypothesis
Does green tea consumption reduce the risk of lung cancer?
Conclusion
This study found no evidence that green tea consumption is associated with lung cancer risk.
Supporting Evidence
- The study included 41,440 participants who completed a questionnaire about their green tea consumption.
- 302 cases of lung cancer were identified during the 7-year follow-up period.
- The hazard ratios for lung cancer incidence showed no significant association with green tea consumption.
Takeaway
Drinking green tea doesn't seem to help prevent lung cancer, even for people who drink a lot of it.
Methodology
A population-based cohort study where participants completed a questionnaire about green tea consumption and were followed for lung cancer incidence over 7 years.
Potential Biases
Potential recall bias due to self-reported data on tea consumption.
Limitations
The study relied on a single questionnaire for green tea consumption, and some participants were lost to follow-up.
Participant Demographics
Men and women aged 40-79 years from Miyagi Prefecture, Japan.
Statistical Information
P-Value
0.48
Confidence Interval
95% CI: 0.80–1.62 for 1-2 cups/day, 0.83–1.66 for 3-4 cups/day, 0.85–1.61 for 5 or more cups/day
Statistical Significance
p=0.48
Digital Object Identifier (DOI)
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