Muscle Protein Synthesis and Metabolic Health in Older Adults: Comparison of Different Types of Protein

Abstract

Based on the few studies presented in this Nutritionist's View article, it seems that whey and casein can improve muscle protein synthesis or metabolic health in older adults. Epidemiologic studies have shown that protein-rich dairy foods can decrease the risk of developing type 2 diabetes mellitus; however, most of the clinical trials in this area have been short-term (7). In addition, some researchers studied only men or overweight/obese individuals. Long-term studies are required to determine definitively the effects of various types of protein intake on metabolic health.