Men who smoke are seven times more likely than nonsmokers to develop Peyronie's disease. Scientists don't know why smoking is linked to an increased risk of this disease.
definition
Peyronie's disease is a condition in which a hard lump forms on the penis and develops into a scar. The presence of the lump makes the penis less flexible. This can be painful and can also cause the penis to bend during an erection, which may make it difficult or impossible for a man to have sex. Sometimes, it can also prevent a man from having an erection.
