February 2025 in “medRxiv (Cold Spring Harbor Laboratory)” This study observed an increased risk of alopecia areata among new users of GLP-1 agonists semaglutide and liraglutide compared to users of bupropion-naltrexone, highlighting potential hair loss concerns with these medications.
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September 2024 in “Cardiovascular Drugs and Therapy” This study found that while glucagon-like peptide 1 receptor agonists report more incidents of suicide, hair loss, and aspiration compared to some other antidiabetic drugs, they did not meet the threshold for positive safety signals.
June 2026 in “Dermatology and Therapy” In this commentary, the authors discuss emerging evidence primarily from pharmacovigilance data and retrospective studies indicating a potential association between GLP-1 receptor agonists, like semaglutide and tirzepatide, and hair loss, although causality remains unproven, prompting recommendations for patient monitoring and further research.
August 2026 in “The Laryngoscope” This study found that adults with type 2 diabetes or obesity using semaglutide and tirzepatide experienced higher odds of nonscarring alopecia, such as telogen effluvium, compared to those using other GLP-1 receptor agonists, with hair loss potentially linked to physiologic stress from weight loss.
November 2024 in “Circulation” This study found that GLP1-RAs, while not triggering significant safety signals, were reported more often for suicide, hair loss, and aspiration events compared to some other diabetes medications.