Men who smoke are more likely to develop problems with getting or maintaining an erection. This may be due to the effects of smoking on blood flow and damage to the blood vessels of the penis. The earlier men quit smoking, the greater their chance of preventing or recovering from this problem.
Men who smoke may have reduced semen volume and sperm count and more abnormal sperm compared to non or exsmokers. Toxins found in tobacco smoke, such as cadmium, nicotine, lead and radioactive elements may be directly toxic as they circulate in the blood and reach the testes. It is not yet known whether this affects the fertility or health of the children of men who smoke.