pro-erex - Version 1.0 Impotence (the inability for a man to get or maintain an erection as often as he would like) is a frustrating, embarrassing, and all-too-common condition. Typically, there are two causes of impotence: physical and psychological (although it is not uncommon for men to suffer from both). Physical causes of impotence can include disorders that restrict blood flow to the penis, such as diabetes, high blood pressure, and hardening of the arteries, as well as conditions which damage nerves in the penis (such as kidney disease). Although physical causes of impotence are common, most cases of impotence can be attributed to psychological causes such as stress, pressure, depression, and feelings of inadequacy. These psychological roadblocks