Hair loss emerges as rare but real side effect of popular GLP-1 drugs

For years, patients taking GLP-1 medications quietly reported losing their hair — and for years, they were largely not believed. New research has now confirmed what those patients knew from experience: hair loss is a genuine, if uncommon, side effect of drugs like semaglutide, which are now among the most widely prescribed medications on earth. The finding is less a revelation than a reckoning — a reminder that medical knowledge is always catching up to human experience, and that the gap between the two has a cost.