i think the answers were solid enough
Smoking Lowers Testosterone
Smoking can lower testosterone and increase the risk for an aortic abdominal aneurysm in men. 30,000 male smokers were studied between the ages of 50 and 69 and found to have a significantly increased risk of atherosclerosis. This increased the incidence of heart disease, stroke, aneurysms, and hypertension because of elevated cholesterol levels. You can also add impotency to that group, as elevated cholesterol clogs the sensitive small blood vessels responsible for trapping blood in the penis during an erection.
Epidemiology 2001;12:94-100