A supplement of ketones may be the magic bullet that allows patients using weight-loss drugs to avoid the potentially adverse side-effect of a shrinking heart and skeletal muscle, according to a study. In their initial studies, Dyck's team confirmed the expected loss of skeletal muscle, which studies show can account for nearly 40% of the total weight loss. To address the unknowns, the team looked at a natural energy source the body produces: ketones. Ketones are produced by the liver when the body runs low on carbohydrates, typically during fasting or when following a low-carb, or ketogenic, diet. Recent work...