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. 2008 Oct 7;99(7):1179-84.
doi: 10.1038/sj.bjc.6604645. Epub 2008 Sep 2.

Green tea consumption and lung cancer risk: the Ohsaki study

Q Li  1 , M Kakizaki, S Kuriyama, T Sone, H Yan, N Nakaya, K Mastuda-Ohmori, I Tsuji
Affiliations

Green tea consumption and lung cancer risk: the Ohsaki study

Q Li et al. Br J Cancer. .

Abstract

We examined the risk of lung cancer in relation to green tea consumption in a population-based cohort study in Japan among 41,440 men and women, aged 40-79 years, who completed a questionnaire in 1994 regarding green tea consumption and other health-related lifestyle factors. During the follow-up period of 7 years (from 1995 to 2001), 302 cases of lung cancer were identified, and the Cox proportional hazards regression model was used to estimate the hazard ratios (HRs) and 95% confidence intervals (CIs). The multivariable-adjusted HRs of lung cancer incidence for green tea consumption of 1 or 2, 3 or 4, and 5 or more cups/day as compared to less than 1 cup/day were 1.14 (95% CI: 0.80-1.62), 1.18 (95% CI: 0.83-1.66), and 1.17 (95% CI: 0.85-1.61), respectively (P for trend=0.48). This cohort study has found no evidence that green tea consumption is associated with lung cancer.

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