Effects of whey protein isolate on body composition, lipids, insulin and glucose in overweight and obese individuals 

This randomized, controlled, parallel design study was conducted to evaluate the effects of whey protein (27 g) supplementation on body composition, lipids, insulin and glucose in comparison to casein (27 g) and glucose (control – 27 g) supplementation in overweight/obese individuals. The results show a significant decrease in triacylglyceride levels, total cholesterol and LDL cholesterol, compared to the placebo-controlled group. Additionally, fasting insulin levels and homeostasis model assessment of insulin resistance scores were significantly lower in the whey supplementation group. 

References:

Pal, S., Ellis, V., & Dhaliwal, S. (2010). Effects of whey protein isolate on body composition, lipids, insulin and glucose in overweight and obese individuals. The British journal of nutrition, 104(5), 716–723. https://doi.org/10.1017/S0007114510000991