Semaglutide, a widely used weight loss drug sometimes sold as Ozempic or Wegovy, slowed biological aging across multiple epigenetic clocks in a randomized, double-blind, placebo-controlled clinical trial. Credit: iStock/Eduardo Monroy Husillos Beyond the widespread attention GLP-1 drugs are receiving for treating obesity, lowering blood sugar and decreasing the risk of cardiovascular disease, emerging research is investigating their other potential impacts — including their effects on aging.Now,...