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. 2017 Jan;27(1):36-41.
doi: 10.1016/j.je.2016.08.004. Epub 2016 Oct 18.

Green tea consumption and cause-specific mortality: Results from two prospective cohort studies in China

Long-Gang Zhao  1 , Hong-Lan Li  1 , Jiang-Wei Sun  1 , Yang Yang  1 , Xiao Ma  1 , Xiao-Ou Shu  2 , Wei Zheng  2 , Yong-Bing Xiang  3
Affiliations

Green tea consumption and cause-specific mortality: Results from two prospective cohort studies in China

Long-Gang Zhao et al. J Epidemiol. 2017 Jan.

Abstract

Background: Green tea is one of the most widely consumed beverages in Asia. While a possible protective role of green tea against various chronic diseases has been suggested in experimental studies, evidence from human studies remains controversial.

Methods: We conducted this study using data from Shanghai Men's Health Study (SMHS) and Shanghai Women's Health Study (SWHS), two population-based prospective cohorts of middle-aged and elderly Chinese adults in urban Shanghai, China. Hazard ratios (HR) and 95% confidence intervals (CI) for risk of all-cause and cause-specific mortality associated with green tea intake were estimated using Cox proportional hazards regression models.

Results: During a median follow-up of 8.3 and 14.2 years for men and women, respectively, 6517 (2741 men and 3776 women) deaths were documented. We found that green tea consumption was inversely associated with risk of all-cause mortality (HR 0.95; 95% CI, 0.90-1.01), particularly among never-smokers (HR 0.89; 95% CI, 0.82-0.96). The inverse association with cardiovascular disease (CVD) mortality (HR 0.86; 95% CI, 0.77-0.97) was slightly stronger than that with all-cause mortality. No significant association was observed between green tea intake and cancer mortality (HR 1.01; 95% CI, 0.93-1.10).

Conclusions: Green tea consumption may be inversely associated with risk of all-cause and CVD mortality in middle-aged and elderly Chinese adults, especially among never smokers.

Keywords: All-cause mortality; CVD mortality; Cancer mortality; Cohort study; Green tea.

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References

    1. FAO Medium-term Prospects for Agricultural Commodities: Projections to the Year 2010. Food and Agriculture Organization of the United Nations; 2010.
    1. Rimm EB, Stampfer MJ. Diet, lifestyle, and longevity–the next steps? JAMA. 2004;292:1490–1492. - PubMed
    1. Roomi MW, Ivanov V, Kalinovsky T, Niedzwiecki A, Rath M. In vitro and in vivo antitumorigenic activity of a mixture of lysine, proline, ascorbic acid, and green tea extract on human breast cancer lines MDA-MB-231 and MCF-7. Med Oncol. 2005;22:129–138. - PubMed
    1. Babu PV, Sabitha KE, Shyamaladevi CS. Therapeutic effect of green tea extract on oxidative stress in aorta and heart of streptozotocin diabetic rats. Chem Biol Interact. 2006;162:114–120. - PubMed
    1. Khan N, Mukhtar H. Tea polyphenols for health promotion. Life Sci. 2007;81:519–533. - PMC - PubMed

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