This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
Most common cause of erectile dysfunction: 
Select and explain. 
A. Psychological, B. Drug induced, C. Alcohol, D. Diabetes
A: Psychological
Answer: A: Psychological 
Explanation: Ans. PsychologicalThe most common cause of erectile dysfunction inYoung and middle-aged men: Psychological Older men: Organic (atherosclerosis)Overall: Organic (atherosclerosis)