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The aim of our study was to assess the effect of ginger (Zingiber officinale) on blood glucose and lipid concentration in subjects with diabetes or hyperlipidemia.

The literature search was conducted in PubMed and Scopus up to 30 October 2016. A total of nine randomized controlled trials were included in the meta-analysis. Weighted mean difference (WMD) and its 95% confidence interval were calculated for net changes in blood glucose (fasting blood-glucose [FBG]) and lipid concentrations (total cholesterol [TC], triglyceride [TG], low-density lipoprotein cholesterol [LDL-C], high density lipoprotein cholesterol [HDL-C]). Subgroup analyses were performed by clinical condition (hyperlipidemia and T2DM) and quality assessment (high and low quality).

Compared to the controls, ginger intake significantly reduced the concentrations of TG (WMD, −8.84; 95% CI: −11.95 to −5.73), TC (WMD, −4 …