Androgenic hair loss is due to the fact that dihydrotestosterone in androgens binds to androgen receptors on hair follicle cells, contributing to the miniaturization of the hair follicle, causing hairs in the anagen phase to gradually become thinner and lighter in color, and ultimately the hair follicle atrophies and disappears, ultimately leading to hair loss. Androgens include testosterone and dihydrotestosterone. The physiological role of testosterone is to increase muscle mass, promote penis and testicle growth, voice color change, sex drive, and axillary and pubic hair development. The role of dihydrotestosterone is the degeneration of hair in the temporal region, acne, prostate growth, and hair growth in the beard area, outer ears, nostrils, and limbs. In the human head and forehead scalp, there is an enzyme called 5-alpha reductase that converts testosterone to dihydrotestosterone. If a man has more androgens in his body, then the content of dihydrotestosterone is more, plus 5-alpha reductase converts testosterone to dihydrotestosterone, increasing the amount of dihydrotestosterone, which is already in high content, and causing hair loss. If you are suffering from androgenetic alopecia, please consult a doctor in time to avoid delaying your condition.