Erectile dysfunction (ED) is the inability to achieve or maintain an erection firm enough for sexual intercourse. It affects an estimated 30 million men in the United States and becomes more common with age, though it can occur at any age.

ED can have physical causes (cardiovascular disease, diabetes, low testosterone, obesity) or psychological causes (stress, anxiety, depression). In many men, it’s a combination of both. The good news: it’s one of the most treatable medical conditions, with oral medications (PDE5 inhibitors) effective in over 95% of cases.