Mounjaro and hair loss: a user reports weight loss followed by shedding

A woman describes losing two stone while taking Mounjaro and then experiencing notable hair shedding; experts and tests discussed possible causes, and the article reports that the shedding later eased and regrowth began.

A woman writes that after six months on Mounjaro she lost two stone and then began to experience marked hair shedding. The piece describes how social media amplified concerns and how the author sought medical, trichology and nutritional assessments. The article references a 2025 US study linking semaglutide to higher odds of both temporary shedding (telogen effluvium) and signs associated with androgenic alopecia. By the time of writing the author reports the shedding has slowed and hair is regrowing. Key points: - The article mentions the author lost two stone on Mounjaro and then noticed increased hair shedding. - A 2025 US study is reported as finding higher odds of telogen effluvium and androgenic alopecia among women taking semaglutide. - Experts quoted in the article offer differing explanations, including nutritional deficits, stress, altered gut or hormone effects, and possible unrecognized mechanisms. - The author had basic nutrient tests reported as within normal ranges, sought trichology assessment, reduced her Mounjaro dose, and later observed shedding slow with signs of regrowth. Summary: The article highlights uncertainty about whether GLP-1 treatments are directly causing hair loss or are revealing other underlying factors such as nutritional shortfalls, stress, or genetic predisposition. It reports differing expert views, cites a study that found increased odds of hair conditions, and notes that the author's symptoms later improved and hair regrew.