For men :
Impotence is the inability to have or maintain an erection. This condition affects roughly 1 in 10 men between the ages of 21 and 75. Risk of impotence is increased to nearly 50% by smoking cigarettes for men in their 30s and 40s. Diabetes, high cholesterol and drugs used to treat high blood pressure also increase the chances impotence.
During an erection, blood flows into the penile arteries causing the veins which drain the penis to become compressed, preventing blood from leaving the penis. This process is significantly impaired by smoking. Less blood flows into the penis if the route is blocked by fatty deposits in the arteries, (atherosclerosis) caused by smoking.
Some of the other male sexual dysfunctions cause by smoking cigarettes include: Reduced amount of ejaculate. Lower sperm count. Abnormal sperm shape. Impaired sperm mobility.
Nicotine acts as a vasoconstrictor. That is, it constricts the arteries and blood vessels—including those that are responsible for a man's erection. Nicotine also lowers testosterone and other hormone levels in the blood. And it increases the concentrations of fatty acids in the blood, leading to clogged arteries and further restricting blood flow to the genitals.
What about Women?
Women who smoke also have cause for concern. There's evidence that smoking can interfere with a woman's ability to have an orgasm. Nicotine can also damage ovaries, causing menstrual abnormalities and decreased estrogen production. It can lead to early menopause with such side effects as increased aging and vaginal dryness which ultimately effects on women sexual life.
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