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It has been estimated that impotence affects 140 million men worldwide.
Over half of all men with impotence are thought to have some physical (medical) cause.
The remainder are believed to have psychogenic causes of impotence. Medical causes of impotence include diabetes and circulatory, neurological or urological conditions.
Penile erection is caused by the engorgement of the penis with blood. This engorgement occurs when the blood vessels delivering blood to the penis increase the de...
