Nicotine could damage the blood vessels in the long run, thereby reducing smoker’s ability to have sex. However, new research suggests that when isolated from other harmful substances contained in cigarettes nicotine actually promotes the growth of healthy blood vessels.

Nicotine is, however a vasoconstrictor, which means it narrows the blood vessels. Theoretically at least, this should reduce men’s ability to have sex, and would even reduce arousal in a women.

While most studies (including some which conclude nicotine has a negative effect on the sex drive) actually test the effect of cigarettes on impotence, impotence has been induced by an intravenous injection of nicotine into dogs.

Of course, dogs are not human and an injection is not smoking. However, a second study gave non-smokers nicotine gum to chew while watching erotic movies. The study found that nicotine can have a significant effect on sexual arousal when watching porn.

Nicotine compresses arteries to make them narrower. When your arteries conducting to your heart are totally blocked, then you bear the problem of heart attack.

The researcher says that a person who is smoking 20 cigarettes a day, would have increased 39% his risk of impotence. Cigarettes contain nicotine that affects people. Nicotine in the blood promotes the vein chamber to dilate. Heart attack and lung cancer are also the major causes of smoking hence smoking can cause impotence.