What Causes Erectile Dysfunction? Intimacy is one of a man’s most basic needs, and anything that interferes the ability to be intimate is a serious issue. A surprising number of men today suffer from a condition called erectile dysfunction (ED), its causes are either psychological or physical, and while it can be embarrassing to bring up with your doctor, there are some very effective treatments available. What Causes ED? Physical Conditions One of the most common causes for ED is a lack of blood flow to the genital area – which is a symptom of smoking, diabetes, high blood pressure, alcohol abuse, drug abuse, abnormal hormone levels, aging, medication side-effects etc. Psychological Conditions Often times depression, performance anxiety, fatigue, among other reasons contribute to ED. By itself loss of libido could be a sign of depression, impotence by itself is a depressing experience for any man, and can sometimes compound the issue. Many times men are too embarr...