1. Green tea and liver cancer risk: A meta-analysis of prospective cohort studies in Asian populations.
- Author
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Huang YQ, Lu X, Min H, Wu QQ, Shi XT, Bian KQ, and Zou XP
- Subjects
- Asia, Female, Humans, Male, Plant Extracts administration & dosage, Camellia sinensis, Diet, Liver Neoplasms prevention & control, Plant Extracts therapeutic use, Tea
- Abstract
Objectives: The aim of this meta-analysis was to investigate whether an association existed between green tea consumption and the risk for liver cancer in prospective cohort studies in Asian populations., Methods: Relevant studies were identified by searching PubMed, EMBASE, ISI Web of Science, and the Chinese Bio-medicine Database published before April 2015. Study-specific risk estimates for the highest versus non- or lowest and increment of daily cup of green tea consumption levels were combined based on fixed- or random-effects models. STATA 11.0 (Stata Corporation, College Station, TX, USA) software was used for statistical analysis., Results: Nine prospective cohort articles involving 465,274 participants and 3694 cases of liver cancer from China, Japan, and Singapore were included. The summary relative risk (RR) indicated a significant association between the highest green tea consumption and reduced risk for liver cancer (summary RR, 0.88; 95% confidence interval [CI], 0.81-0.97). However, no statistically significant association was observed when analyzing daily consumption of one cup (summary RR, 0.97; 95% CI, 0.95-1.00). When stratified by sex, the protective effect of green tea consumption on risk for liver cancer was observed only in the group of women (summary RR, 0.78; 95% CI, 0.64-0.96), but not in men (summary RR, 0.89; 95% CI, 0.79-1.00)., Conclusions: The present analysis indicated the preventive effects of green tea intake on the risk for liver cancer in female Asian populations. However, additional studies are needed to make a convincing case for this association., (Copyright © 2016 Elsevier Inc. All rights reserved.)
- Published
- 2016
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