In a new study, a team led by Assistant Professor Yoshitaka Kondo investigated the amount of dietary protein needed to improve metabolic health in mice approaching old age. The team recruited young (6 months old) and middle-aged (16 months old) male C57BL/6NCr mice who were fed isocaloric diets with varying protein content (5 to 45 %) for two months. After two months, the effect of varying protein diets was assessed based on measurements of skeletal muscle weight, liver and plasma lipid profiles, and self‑organizing map (SOM) cluster analysis of plasma amino acid profiles. The team observed that the consumption of...