The Mechanism of Male Hair Loss: DHT DHT causes “miniaturization” of hair follicles Hereditary hair loss in men (androgenetic alopecia) is caused by the action of the hormone dihydrotestosterone (DHT) on genetically susceptible scalp hair follicles. Normally, hair follicles cycle through a growth stage (anagen), which lasts 2-6 years, and a resting stage (telogen), which … Continue reading Causes