GLP-1 & Hair Loss
Causes and Prevention (2026 Guide)
Does Ozempic or Mounjaro cause hair loss? Learn about telogen effluvium from rapid weight loss and how to prevent hair thinning on GLP-1 medications.
What Causes Hair Loss on GLP-1?
Key insight: It's not the medication directly—it's the rapid weight loss. This condition is called telogen effluvium.
When your body experiences stress (rapid weight loss, caloric deficit, nutritional deficiencies), hair follicles prematurely enter the "resting" (telogen) phase. 2-3 months later, this hair falls out.
In clinical trials, about 3-5% of participants on semaglutide and tirzepatide reported hair loss, compared to 1% on placebo. The same rate is seen with bariatric surgery and crash diets.
When to See a Doctor
Guide FAQs
Does Ozempic or Mounjaro cause hair loss? Learn about telogen effluvium from rapid weight loss and how to prevent hair thinning on GLP-1 medications.
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