erectile dysfunction is common. More than 30 percent of men ages 40–70 have trouble achieving or maintaining an erection. Many men assume erectile dysfunction or ED is a psychological problem. However, research suggests that underlying vascular (blood vessel) problems are the most common cause of ED. And those underlying problems can also put men at risk for other serious medical Problems You can decrease your risk of developing erectile dysfunction by making your lifestyle choices that help keep your blood vessels healthy and help prevent type 2 diabetes.