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Association between tea consumption and osteoporosis: A meta-analysis.

Medicine (Baltimore). 2017 Dec;96(49):e9034 Authors: Sun K, Wang L, Ma Q, Cui Q, Lv Q, Zhang W, Li X

BACKGROUND: Previous reports have suggested a potential association of tea consumption with the risk of osteoporosis. As such association is controversial, we conducted a meta-analysis to assess the relationship between tea consumption and osteoporosis. METHODS AND FINDINGS: We systematically searched PubMed, EMBASE and WanFang databases until March 30, 2016, using the keywords "tea and osteoporosis," without limits of language. Odds ratios (ORs) with 95% confidence intervals (95% CIs) were derived by using random-effects models throughout the analyses. We conducted the analysis of the statistical heterogeneity using Cochrane I. The funnel plot was used to speculate the publication bias, while the subgroup analysis and multiround elimination method were employed. RESULTS: Our study was based on 17 journal articles, including 2 prospective cohort studies, 4 case-control studies, and 11 cross-sectional studies. In the present study, the total OR of osteoporosis for the highest versus the lowest categories of tea consumption was 0.62 (95% CI, 0.46-0.83), with significant heterogeneity among studies (Iā€Š=ā€Š94%, Pā€Š<ā€Š.01). There was, however, no publication bias of the meta-analysis about tea consumption and osteoporosis. Subgroup analysis showed that tea consumption could reduce the risk of osteoporosis in all examined subgroups. CONCLUSION: In the present study, it can be concluded from the results that tea consumption can reduce the risk of osteoporosis. PMID: 29245297 [PubMed - in process]

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