Hair Loss in Males

Male type hair loss is caused by a hereditary sensitivity against the effects of testosterone. It accounts for a major proportion of the hair losses, 95%, especially in men, Male type hair loss is progresses increasingly with advanced age.
After the age of 20, forehead-hair line is seen to move from front to back, and thinned messy hair is seen in opened areas.
Acceleration of the conversion of testosterone to dihydrotestosterone in scalp at these ages and increase in the amount of dihydrotestosterone, turn the normal hair strands to ungrowing thin strands 5-alpha-reductase is the enzyme converting testosterone to dihydrotestosterone, and is the primary cause of male type hair loss. Medications containing 5-alfa reductase inhibitor finasteride as active substance, decrease the circulating dihydrotestosterone level by 60%, and can reduce or stop the hair loss.