Serena Williams sparked a heated debate after revealing she lost 31 pounds using a GLP-1 drug. While the tennis legend praised the medication for helping her reach her postpartum goals, actress Jameela Jamil quickly pushed back, warning fans about the drug’s “devastating” risks and questioning the ethics of celebrity endorsements.

In a recent video spot, the 43-year-old athlete reveals that Ro helped her lose 31 pounds in eight months. “Yes, I’m on Ro. They say GLP-1s for weight loss is a shortcut. It’s not, it’s science. After kids, it’s a medicine my body needed,” she says.