Male impotence, or erectile dysfunction, is the inability to maintain an erection for a long enough time to have sex. A man who suffers from impotence may be unable to have an erection altogether, be unable to maintain it for more than a short period, or may be able to have an erection sometimes and not at other times. Approximately 10 to 15 million American men suffer from some form of impotence. The good news is that it is easy to understand and can be treated in all age groups.

To understand impotence, it helps to have a basic understanding of how an erection happens. The penis has a large amount of spongy tissue, through which blood vessels run, and some muscle. When a man is sexually stimulated through touch or mentally, nerve signals trigger a flow of blood from arteries into the spongy tissue in the penis. This tissue becomes engorged, making the penis erect. When an erection subsides, muscles in the penis contract, effectively squeezing the blood of the spongy tissue through veins. If there is any interference with the nerve signals or blood flow that cause an erection, impotence may result.

In the majority of cases, male impotence has an underlying cause. Diseases like diabetes, alcoholism, and kidney disease may affect both nerve signals and blood flow. Surgery or injuries to the bladder, prostate, and male urethra may cause nerve damage. Cardiovascular disease or other diseases of the blood vessels may interfere with blood flow. Nerve signals may be altered due to psychological reasons including anxiety and stress.

How does one deal with impotence? Going to a doctor is the first step, because this may help identify an underlying medical condition that should be treated. Exercise may reduce impotence in older men. Other lifestyle changes, such as quitting smoking and losing weight may also help.