Talk to Psychologist on Nightfall Problem

From last 4-5 years i am having problem of nightfall. It happens 2-3 times a week even after intense physical activities. Before that i have been involved in masturbation and other sexual activities (sex). But i quit 4-5 years ago but still sometimes do masturbation. Because of this i am having problem of excessive nightfall 2-3times a week, hair loss, thinning of hair, knuckling knees, and specially memory loss. kindly guide me in this regards