Erectile dysfunction affects an estimated one in ten men in the United States. According to one study, the prevalence of impotence at all degrees is approximately 52% in men aged 40 to 70 years. This prevalence rate might be underestimated, given patients' reluctance to discuss the issue with their physicians. Erectile dysfunction is often accompanied by comorbid conditions because of overlapping risk factors. It is important that physicians be aware of the frequency of this coexistence so that they may monitor all potential health concerns and treat patients optimally.