Experts say the medications themselves aren’t necessarily directly causing the hair loss, but there is a strong association between GLP-1 medications, rapid weight loss and hair shedding. This can lead to a common and usually temporary form of hair loss called telogen effluvium. This type of hair loss is typically temporary, and hair generally grows back within six to 12 months. “Typically, as time goes by, people will notice that hair loss is slowing down,” Bessesen added to HuffPost. The increased risk was mainly linked to non-scarring hair loss, which means the hair follicles are not permanently damaged and the hair loss may be reversible.