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GLP-1 Drugs Linked to Nail Problems
Developing
In Short: The study also found that nail problems remained significantly more common among people taking GLP-1 drugs even when the analysis was restricted to participants who had lost weight.
Researchers have identified a new side effect associated with GLP-1 receptor agonists, commonly used to treat type 2 diabetes and obesity. In a study presented at the European Academy of Dermatology and Venereology (EADV) Congress 2026, participants using GLP-1 drugs reported significantly more nail, hair, and scalp problems compared to those not taking the medications.
Among the participants, 66% of GLP-1 users reported at least one nail disorder, compared to 53% of those who had never used the drugs. Unusual hair loss was also more prevalent among GLP-1 users, with 50% reporting hair loss compared to 34% of controls.
The study, which included 575 GLP-1 users and 1,329 non-users across France, the United States, Brazil, and Mexico, found that hair loss beginning after treatment initiation was more than twice as common among GLP-1 users (26% vs 12%).
Dr Charles Taïeb, a study author, noted that nail changes associated with GLP-1 therapies had previously been anecdotal. The research now provides systematic evidence of these effects.
The study also found that nail problems remained significantly more common among people taking GLP-1 drugs even when the analysis was restricted to participants who had lost weight.
While the findings are concerning, researchers advise that patients should not stop their GLP-1 treatments without medical guidance. The study does not definitively establish that GLP-1 receptor agonists directly cause these nail changes.
What this adds
The study does not establish causation between GLP-1 receptor agonists and nail disorders, only a correlation.
The research highlights the need for further investigation into the potential long-term effects of GLP-1 drugs on skin and hair health.
What's still developing
- Now, for the first time, researchers have used a controlled study design to ask whether these wildly popular medications also affect the nails, and the answer is striking.
- A large multinational study has linked GLP-1 receptor agonist use with a notably higher prevalence of nail disorders, including detachment and discoloration.
Sources
- Bioengineer.orglink