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→Health Effects
It has been estimated that cigarette smoking is responsible for 28% of all deaths in developed countries in the 35-69 age group, as well as 35% of all cancer deaths and 28% of all deaths due to vascular diseases<ref>Hecht, 2006.</ref>. Smoking increases the risk of oral, pharyngeal, esophageal, laryngeal, lung, uterine, cervical, urinary, and kidney cancers<ref>http://www.cdc.gov/tobacco/health_effects/cancer.htm</ref>.
It has been estimated that cigarette smoking is responsible for 28% of all deaths in developed countries in the 35-69 age group, as well as 35% of all cancer deaths and 28% of all deaths due to vascular diseases<ref>Hecht, 2006.</ref>. Smoking increases the risk of oral, pharyngeal, esophageal, laryngeal, lung, uterine, cervical, urinary, and kidney cancers<ref>http://www.cdc.gov/tobacco/health_effects/cancer.htm</ref>.
Coronary heart disease is one of the biggest causes of death in the United States, and is 2-4 more likely in smokers than nonsmokers. Smokers are also 10 times more likely to develop peripheral vascular disease, which is a narrowing of the arteries. Additionally, smokers are twice as vulnerable to a stroke compared with nonsmokers<ref>http://www.cdc.gov/tobacco/health_effects/heart.htm</ref>. Smoking also negatively impacts the respiratory system. Approximately 90% of all deaths from chronic lung diseases are the result of smoking<ref>http://www.cdc.gov/tobacco/health_effects/respiratory.htm</ref>.
Coronary heart disease is one of the biggest causes of death in the United States, and is 2-4 more likely in smokers than nonsmokers. Smokers are also 10 times more likely to develop peripheral vascular disease, which is a narrowing of the arteries. Additionally, smokers are twice as vulnerable to a stroke compared with nonsmokers<ref>http://www.cdc.gov/tobacco/health_effects/heart.htm</ref>. Smoking also negatively impacts the respiratory system. Approximately 90% of all deaths from chronic lung diseases are the result of smoking<ref>http://www.cdc.gov/tobacco/health_effects/respiratory.htm</ref>. Recent studies also indicate that teen smokers are almost three times more likely to engage in homosexual behavior.
== Secondhand Smoke ==
== Secondhand Smoke ==