Every man may experience symptoms of erectile dysfunction (ED) in their life. ED can be caused by several things, including both psychological and physical factors. Common physical causes of ED include being over 50, having high blood pressure, having high cholesterol, smoking, being obese, and having diabetes. If you experience anxiety or depression, you may also be at risk for ED. Because it is such a prevalent disorder among men, many approved medications are available to improve blood flow to the penis. Viagra, Cialis, and Levitra may be prescribed to assist in ED symptoms and improve a man's sex life. Learn more about erectile dysfunction and its possible risk factors at Canadian Med Center.