High-Protein Diets Cancel Out Weight-Loss Benefits
A high-protein diet does not promote healthful weight loss, according to a study published in Cell Reports. Researchers assigned obese postmenopausal women to a calorie-restricted diet with either a high-protein (1.2 g/kg) or normal-protein (0.8 g/kg) diet and monitored insulin sensitivity. Although both diets resulted in a reduction in body weight, the high-protein group did not improve its insulin sensitivity or reduce oxidative stress as observed with the normal-protein diet. Researchers caution that high-protein diets’ failure to improve the primary mechanism for type 2 diabetes raises concern.
Smith GI, Yoshino J, Kelly SC, et al. High-protein intake during weight loss therapy eliminates the weight-loss-induced improvement in insulin action in obese postmenopausal women. Cell Rep. 2016;17:849-861.
Breaking Medical News is a service of the Physicians Committee for Responsible Medicine, 5100 Wisconsin Ave., Ste. 400, Washington, DC 20016, 202-686-2210. Join the Physicians Committee and receive the quarterly magazine, Good Medicine.