Green tea consumption and lung cancer risk: The Ohsaki study

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

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37 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)1179-1184
Number of pages6
JournalBritish Journal of Cancer
Issue number7
Publication statusPublished - 2008 Oct 7


  • Green tea
  • Japan
  • Lung cancer
  • Prospective cohort studies


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