Estimates of the prevalence of erectile dysfunction in men with diabetes range from 20 to 85 percent. Erectile dysfunction is a consistent inability to have an erection firm enough for sexual intercourse. The condition includes the total inability to have an erection, the inability to sustain an erection, or the occasional inability to have or sustain an erection. A recent study of a clinic population revealed that 5 percent of the men with erectile dysfunction also had undiagnosed diabetes.*

Men who have diabetes are three times more likely to have erectile dysfunction as men who do not have diabetes. Among men with erectile dysfunction, those with diabetes are likely to have experienced the problem as much as 10 to 15 years earlier than men without diabetes.