Smoking increases the chance of impotence in males. American Council on Science and Health. Smoking impairs sperm motility and normal development, increasing chances of infertility, miscarriage and birth defects. American Council on Science and Health. Cigarette smoking is a major cause of heart disease among both men and women.
Smokers have twice the risk of heart attack of nonsmokers.
Centers for Disease Control and Prevention. Department of Health and Human Services. Long-term cigarette smoking is associated with increased risk of colorectal cancer mortality in both men and women. More than 4,000 chemicals, including 43 known carcinogens and over 400 other toxins, can be found in cigarette smoke. A prospective Study of Cigarette Smoking and Age-Related Macular Degeneration in Women.