Most hair loss associated with GLP1-agonist medications is due to telogen effluvium. It is the rapid weight loss not the drug in this instance that leads to temporary hair loss.

Medical Mythbusting Commentary for September 9, 2026

Source:
Could Your GLP-1 Be Making You Bald? One Study Says Maybe

Reference:
A causal effect of increased GLP1R expression on male-pattern hair loss is suggested by 2-sample Mendelian randomization