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Meta-analysis: high-protein diets are beneficial in diabetics

Posted:  Thursday, October 03, 2013

In a meta-analysis of randomized-controlled trials, several researchers aimed to assess the effect of high-protein diets administered to type-2 diabetics on body weight and cardio metabolic markers.

Study description: A search on PubMed and Cochrane databases was performed, which resulted in the selection of nine articles gathering a total of 418 diabetic patients. The intervention lasted from 4 to 24 weeks, and administered diet which protein content averaged 25-32 % of total energy versus 15-20 % in the control groups.

Study results: The pooled analysis revealed a mean glycated hemoglobin (HbA1C) reduction of 0.52 % and a reduction in systolic and diastolic blood pressure of 3.13 and 1.86 mmHg respectively after high-protein diets compared to the control diets. Fasting blood glucose or lipid profiles were not significantly changed by the intervention. Apart from this analysis, one study found a large influence of protein diet on weight loss and another on HbA1C levels.

Conclusions: As suggested by the authors, high-protein diets may have benefits on weight loss, HbA1C and blood pressure in diabetics, but further studies are needed to confirm these trends.

Dong, Jia-Yi, Zeng-Li Zhang, Pei-Yu Wang, et Li-Qiang Qin. « Effects of high-protein diets on body weight, glycaemic control, blood lipids and blood pressure in type 2 diabetes: meta-analysis of randomised controlled trials ». British Journal of Nutrition 110, no 05 (2013): 781 789. doi:10.1017/S0007114513002055

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