And consuming whey protein may even help increase insulin production. "Consumption of whey protein shortly before a high-glycemic index breakfast increased the early and late post-meal insulin secretion, improved GLP-1 responses and reduced post-meal blood sugar levels in type 2 diabetic patients," the authors wrote. "Whey protein may therefore represent a novel approach for enhancing glucose-lowering strategies in type 2 diabetes." Wainstein J, Barnea M, Ganz T, et al. Incretin, insulinotropic and glucose-lowering effects of whey protein pre-load in type 2 diabetes: a randomised clinical trial. Diabetologia. 2014.