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Cigarette Smoking and Cancer: Questions and Answers
- Cigarette smoking causes 87 percent of lung cancer deaths and is responsible for most cancers of the larynx, oral cavity and pharynx, esophagus, and bladder.
- Secondhand smoke is responsible for an estimated 3,000 lung cancer deaths among U.S. nonsmokers each year
- Tobacco smoke contains thousands of chemical agents, including over 60 substances that are known to cause cancer.
- The risk of developing smoking-related cancers, as well as noncancerous diseases, increases with total lifetime exposure to cigarette smoke.
- Smoking cessation has major and immediate health benefits, including decreasing the risk of lung and other cancers, heart attack, stroke, and chronic lung disease.