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Why some people lose their hair when they’re on GLP-1s

Hair loss linked to GLP-1 drugs is mainly due to rapid weight loss and nutritional deficiencies, with 2.5% of Wegovy users reporting this side effect in clinical trials.

  • Amid a surge of GLP-1 use, clinicians report rising hair-loss complaints, with about 8 adults currently taking these drugs, a 6% increase since May 2024.
  • Experts attribute most cases to telogen effluvium, with rapid weight loss from GLP-1s pushing hair follicles into shedding, typically appearing three to six months later, say Dr. Aron Nusbaum and Dr. Anthony Rossi.
  • Regulators and manufacturers list hair loss in safety data, with Wegovy trials showing 2.5% versus 1.0% placebo and Zepbound labeling reporting 7.1% female versus 0.5% male hair-loss rates.
  • Clinicians recommend medical evaluation for vitamin deficiencies and treatments including Minoxidil or dose adjustments, as Dr. Farah Moustafa notes side effects often lead patients to stop therapy.
  • Some specialists caution that dermatology experts warn about cosmetic GLP-1 use in med spas and pharmacies, while experts debate if these drugs trigger chronic telogen effluvium or early androgenetic alopecia.
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WAAY-TV broke the news in Huntsville, United States on Friday, November 14, 2025.
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