GLP-1 Drugs Linked to Nail and Hair Side Effects

Two multinational studies presented at the EADV Congress 2026 found that GLP-1 receptor agonist users report more nail disorders, hair loss and scalp inflammation than controls. Nail detachment affected 39% of users versus 9% of controls.

• Nail detachment in 39% of GLP-1 users versus 9% of controls
• 66% of users reported at least one nail disorder versus 53% of controls
• Unusual hair loss in 50% of users versus 34% of controls
• Study does not prove causation and advises against stopping treatment