Jameela Jamil slams Serena Williams over weight-loss medication use Jameela Jamil finds it "uncomfortable" seeing Serena Williams promote the use of weight-loss medication. 25 August 2025 Jameela Jamil has called out Serena Williams for promoting weight-loss medication. Jameela Jamil has hit out at Serena Williams for promoting the use of weight-loss medication The 43-year-old tennis champion revealed last week that she shed 31lbs using the GLP-1 treatment - which includes the likes of Ozempic and Mounjaro and a plays a key role in regulating blood sugar, appetite, and digestion.