What causes impotence and how can you prevent getting it?

Lots of reasons: Lots of reasons to become impotent or develop erectile dysfunction. Stress in the form of finances, family, friends, work, guilt, religion, culture, etc can lead to ed. Medically speaking, ed is associated w/various medications, diabetes, heart disease, high cholesterol, high blood pressure, depression & more. If it doesn't resolve, it's imperative that you go see your family doc.