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Abstract
Evidence from animal and observational studies has supported the beneficial effects of beta-glucan intake on glycemic control, but intervention studies in hypercholesterolemic crowd have generated mixed results and have not been systematically examined. In the present study, we aimed to quantitatively evaluate the relation between beta-glucan consumption from oats or barley on glycemic control in hypercholesterolemic individuals. A systematic literature review was conducted for relevant published randomized controlled trials studies (RCTs) in electronic databases through July 2014. Twelve trials with a total of 603 subjects were included in the meta-analysis. Beta-glucan consumption did not significantly affect measures of glycemic control. Summary estimates of weighted mean differences (WMD) and 95% confidence interval was 0.05 mmol/L (−0.11, 0.02) for fasting glucose concentration and 0.75 pmol/L (−1.82, 3.32) for fasting insulin concentrations. In conclusion, there was not a significant overall effect of beta-glucan intake on improvements of fasting glucose and insulin concentrations in hypercholesterolemic subjects.
Declaration of interest
All authors read and approved the final article. All authors have no conflicts of interest.