There has always been a concern, but never to the degree there is now, with male impotence. Thanks to the arrival of Viagra, there has been more open discussion on the topic than ever before. Men who have been frustrated with various sexual problems are flocking to Viagra, hoping for a panacea for all their bedroom problems. However, according to a 1992 conference on Impotence by the National Institute of Health (NIH), "Education of the public on aspects of sexual dysfunction is essential" and "Education of physicians and other health professionals in aspects of human sexuality is currently inadequate, thus curriculum development is urgently needed."

If there is any disruption in either the arterial flow or venous constriction of blood, an erection will be impossible, or at best insufficient.