AI Article Synopsis
- The study aimed to clarify the conflicting results of previous research on tea consumption and oral cancer risk through a meta-analysis of various epidemiological studies.
- The analysis included 14 articles, totaling 19 studies and 4,675 oral cancer cases, and found a significant reduction in oral cancer risk associated with high tea consumption, particularly green tea.
- The results suggest that drinking tea, especially green tea, may help reduce the risk of developing oral cancer, with significant effects observed in both Asian and Caucasian populations.
Article Abstract
Objectives: Epidemiological studies evaluating the association of tea consumption and the risk of oral cancer risk have produced inconsistent results. Thus, we conducted a meta-analysis to assess the relationship between tea consumption and oral cancer risk.
Methods: Pertinent studies were identified by a search in PubMed, Web of Knowledge and Wan Fang Med Online. The fixed or random effect model was used based on heterogeneity test. Publication bias was estimated using Egger's regression asymmetry test.
Results: Finally, 14 articles with 19 studies comprising 4675 oral cancer cases were included in this meta-analysis. The relative risk (95% confidence interval) of oral cancer for the highest versus the lowest category of tea consumption was 0.853 (0.779-0.934), and the association was significant between oral cancer risk and green tea consumption [0.798 (0.673-0.947)] but not in the black tea consumption [0.953 (0.792-1.146)]. The associations were also significant in Asian and Caucasian.
Conclusions: Our analysis indicated that tea consumption may have a protective effect on oral cancer, especially in green tea consumption.
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| http://dx.doi.org/10.1016/j.oraloncology.2013.12.014 | DOI Listing |
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