You can bet your brush on it! You might come to regret all those jokes you made about your Dad’s or brother’s receding hairlines because during and after menopause, women may experience thinning of their hair all over or just in the front. Testosterone’s metabolite DHT (dihydrotestosterone) is the hair-thinning culprit in this case. As the hormone estrogen drops, the hormone testosterone can rise in proportion to the remaining estrogen. The net result causes hair to thin.