Nail detachment and hair loss have been linked to weight loss drugs. Should you worry?

A recent study presented at the European Academy of Dermatology and Venereology (EADV) Congress 2026 found that individuals taking GLP-1 (Glucagon-like peptide-1) weight loss medications experienced nail changes, hair loss, and scalp irritation more frequently than those who had never used these drugs. While 39% of GLP-1 users reported nail detachment, compared to 9% of non-users, and 50% reported hair loss, compared to 34% of non-users, the study does not conclusively prove that the medications directly cause these side effects.

Dermatologists advise against unnecessary concerns and suggest that factors such as rapid weight loss, nutrient deficiencies, and existing scalp conditions could contribute to the observed symptoms. Patients experiencing these changes should consult their doctors, who may recommend blood tests to evaluate potential underlying issues.