Fat jabs may be good for the liver Weight-loss injections could improve liver health by reducing inflammation and scarring, even in patients who lose little weight. 15 April 2026 Weight-loss injections may benefit the liver. A person injecting wegovy Scientists have discovered that semaglutide - the active ingredient in blockbuster jabs used to treat obesity and type 2 diabetes - can directly improve liver health, even in patients who shed little or no weight. The drug - sold under brand names such as Wegovy and Ozempic - mimics a gut hormone known as GLP-1.