Muscle degeneration, the most prevalent cause of frailty in hereditary diseases and aging, could be caused by a deficiency in one key enzyme in a lipid biosynthesis pathway. Researchers at the Institute of Molecular Biotechnology (IMBA) of the Austrian Academy of Sciences characterize how the enzyme PCYT2 affects muscle health in disease and aging in laboratory mouse models. The findings are published on March 20 in Nature Metabolism.