Block Chloride Channels to Reverse Sarcopenia

A Journal of Clinical Investigation study reports that aging muscles lose sodium channels at the neuromuscular junction, and that partially blocking the muscle chloride channel ClC‑1 in rodents restores responsiveness to nerve signals and improves strength. The researchers are collaborating with a drug company to pursue further preclinical work toward human testing. — If translatable to humans, this mechanism‑based drug approach would reshape how medicine treats age‑related muscle weakness, affecting geriatrics, disability policy and health‑care demand for older adults.