Soy Not Effective on Glycemic Control

Previous studies have suggested that soy intake may carry beneficial effects on glycemic control, but human intervention studies have yielded mixed results. A recent meta-analysis of 24 trials and more than 1,500 subjects found that soy consumption does not significantly affect measures of glycemic control. Researchers noted that there was a favorable change in fasting glucose concentrations in studies that used whole soy foods or a soy diet in the subgroup analysis. There were not enough trials to generate sufficient evidence for other glycemic variables, such as HbA1c and two-hour postchallenge glucose and insulin concentrations. Am Jrnl of Clin Nutr (03/11) Liu, Zhao-min; Chen, Yu-ming