In older men, ED usually has a physical cause, such as disease, injury, or side effects of drugs. Health problems that can cause injury to the nerves or impairs blood flow in the penis can cause ED.
The older the men get, the higher the erectile dysfunction incidence. For 40 year old men, the chance of getting ED is only 5%. But for 65 years old men, the chance of getting ED increases to 15% to 25%.
The good news is that ED now is treatable at just about any age. More research has been done, more drugs have been approved, and more men are seeking help. Urologists, who specialize in problems of the urinary tract, have traditionally treated ED. Now family doctors and many other kinds of specialists are treating ED also.
Source: National Kidney and Urologic Diseases Information Clearinghouse