While Erectile Dysfunction becomes more common as men age, growing old is not the only cause of this problem. Though sexual function may decrease with age, many men enjoy sexual activity well into their senior years. Psychological problems, such as stress and anxiety can also contribute to Erectile Dysfunction. The recent studies show that the main causes of Erectile Dysfunction are, 

• Physical causes due to problems in hormones, reproductive system, or in the tissues responsible for causing erection
• Side effects due to medicines (blood pressure control, diabetes)
• Sometimes psychological factors such as stress, anxiety to perform or depression.