A 53-year-old man visits his physician with a complaint of erectile dysfunction. He is married for 20 years and they have two kids. He had never complained of his sexual performance until last month when he found out that he could not induce a full erection. He has no major health conditions and does not take any medications. He smokes one pack of cigarettes daily for 25 years. He does not drink alcohol or takes recreational drugs. Which is the most likely etiology for this patient’s condition? A-Endocrine B-Infection C-Pure psychogenic D-Trauma E-Vascular Answer
