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Edgar Allan Poe/Sullivan's Island Library
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![loading](/sites/all/modules/hf_eds/images/loading.gif)
Association between green tea intake and digestive system cancer risk in European and East Asian populations: a Mendelian randomization study.
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- Author(s): Nie, Duorui; He, Xiaoyu; Zheng, Hao; Deng, Deyu; He, Fanghui; Li, Ruyi; Ni, Xiaoting; Li, Shunxiang; Xu, Fei
- Source:
European Journal of Nutrition. Jun2024, Vol. 63 Issue 4, p1103-1111. 9p. - Source:
- Additional Information
- Subject Terms: TUMOR risk factors; RISK assessment; FOOD consumption; GENOME-wide association studies; RESEARCH funding; GREEN tea; EUROPEANS; EAST Asians; MULTIVARIATE analysis; DESCRIPTIVE statistics; GENETIC variation; ODDS ratio; DIGESTIVE organs; ATTRIBUTION (Social psychology); CONFIDENCE intervals; REGRESSION analysis
- Abstract: Purpose: Previous observational studies have shown that green tea consumption is associated with a reduced incidence of digestive system cancers (DSCs). However, the observed association could be due to confounding factors. Therefore, we used a two-sample Mendelian randomization (MR) approach to assess the causal effect of green tea intake on the risk of five common DSCs. Methods: Independent genetic variants strongly associated with green tea consumption in European and East Asian populations were selected as instrumental variables in genome-wide association studies involving up to 64,949 European individuals and 152,653 East Asian individuals, respectively. The associations between genetic variants and DSCs were extracted from the FinnGen study and the Japan Biobank. The primary analysis was performed using random-effects inverse variance weighting (IVW). Other MR analyses, including weighted mode-based estimate, weighted-median, MR-Egger regression, Mendelian Randomization-Pleiotropy Residual Sum and Outlier (MR-PRESSO) analysis, were used for sensitivity analyses. In addition, a multivariate MR design was performed to adjust for smoking and alcohol consumption. Results: The IVW results showed no causal relationship between tea intake and DSCs risk in European population (esophagus cancer: odds ratio (OR) = 1.044, 95% confidence interval (CI) 0.992–1.099, p = 0.096; stomach cancer: OR = 0.988, 95% CI 0.963–1.014, p = 0.368; colorectal cancer: OR = 1.003, 95% CI 0.992–1.015, p = 0.588; liver cancer: OR = 0.996, 95% CI 0.960–1.032, p = 0.808; pancreatic cancer: OR = 0.990, 95% CI 0.965–1.015, p = 0.432). The MR-Egger regression, MR-PRESSO analysis and other methods also confirmed the reliability of the conclusion. Similarly, no significant association was found between green tea consumption and the incidence of DSCs among East Asians. This relationship is not significant even after adjusting for smoking and alcohol consumption (P > 0.05). Conclusion: Our study provides evidence that genetically predicted green tea intake is not causally associated with the development of DSCs in the European and East Asian population. [ABSTRACT FROM AUTHOR]
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