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Indirect, not direct. Rapid weight loss triggers telogen effluvium (temporary shedding) in some users at months 2-4. Hair regrows by month 6-8.
Wegovy doesn't directly cause hair loss, but rapid weight loss (>1.5% body weight/month sustained) triggers telogen effluvium — a stress response that pushes more hair follicles into the resting/shedding phase. Onset: months 2-4. Peak: month 4-5. Resolution: month 6-8 with full regrowth. Mitigation: adequate protein (1.4g/kg body weight/day), iron + vitamin D supplementation if deficient, biotin (modest evidence), avoid harsh styling during shedding phase. If shedding persists past month 8 или is severe, check ferritin, vitamin D, thyroid — could be unrelated cause unmasked by weight loss.
Editorial answer reviewed by a board-certified clinician. Not medical advice. Coordinate treatment decisions with your prescriber.