Can hormone replacement therapy trigger hair loss in women?
Occasionally, genetic thinning can be triggered by hormone replacement therapy (HRT). Progestogens in HRT can have an effect on the hair similar to androgens. Progestogens that do not influence androgenetic alopecia are Gestodene, Desorgestrol, and Cyproterone acetate. Some oral or depot (slow- release injection) contraceptives can exert an androgenetic influence in susceptible women. Changing contraceptives to one that has no active androgenetic effects will usually correct the problem.