A Meta-analysis of the Efficacy of Cinnamon on blood glucose, lipid profile and anthropometric parameters : An updated literature review

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Chettawat Sakhankort
Tawit Morapat
Pongprayoon Koonmee
Kritsanee Saramunee
Bunleu Sungthong
Wiraphol Phimarm

Abstract

Introduction: Cinnamon has been used as alternative medicine for reducing blood glucose, lipid lowering, and decrease anthropometric parameters. However, no summarization of all clinical effects and safety has been evaluated. Therefore, our study aimed to review literatures systematically and conduct the meta-analysis to confirm clinical efficacy of cinnamon. Methods: International and Thai databases were searched from inception through year 2016. Comparative randomized controlled trials (RCT) investigating oral cinnamon in human, written in English or Thai. Two independent authors evaluated title, abstract, quality of studies and extract data. Results: From 133 articles were identified, 15 trials involving 621 participants were included for efficacy analysis. The resulted showed statistically significant difference of efficacy in FBS (WMD -8.99 mg/dL; 95%CI -14.66, -3.31; p=0.002), LDL (WMD -10.05 mg/dL; 95%CI -18.12, -1.98; p=0.01) and TG (WMD - 7.03 mg/dL; 95%CI -12.56, -1.50; p=0.01). There were no statistically significant differences in anthropometric parameters. No serious adverse events from cinnamon had been found during the studies. Conclusion: This meta-analysis revealed that cinnamon may improve fasting blood glucose, lipid profile. However, the adverse side effect and safety should be concerned. A large, well-designed RCT using a standardized preparation of cinnamon will provide definitive data on specific participants.

Article Details

Section
Pharmaceutical Sciences

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