Cigarette smoking is the number one risk factor for lung cancer. In the United States, cigarette smoking causes about 90% of lung cancers.Tobacco smoke is a toxic mix of more than 7,000 chemicals. Many are poisons. At least 70 are known to cause cancer in people or animals. People who smoke are 15 to 30 times more likely to get lung cancer or die from lung cancer than people who do not smoke. Even smoking a few cigarettes a day or smoking occasionally increases the risk of lung cancer. The more years a person smokes and the more cigarettes smoked each day, the more risk goes up.
People who quit smoking have a lower risk of lung cancer than if they had continued to smoke, but their risk is higher than the risk for people who never smoked. Quitting smoking at any age can lower the risk of lung cancer.
Smoking can cause cancer almost anywhere in the body. Smoking causes cancer of the mouth, nose, throat, voicebox (larynx), esophagus, bladder, kidney, pancreas, cervix, stomach, blood, and bone marrow (acute myeloid leukemia).
People who quit smoking have a lower risk of lung cancer than if they had continued to smoke, but their risk is higher than the risk for people who never smoked. Quitting smoking at any age can lower the risk of lung cancer.
Smoking can cause cancer almost anywhere in the body. Smoking causes cancer of the mouth, nose, throat, voicebox (larynx), esophagus, bladder, kidney, pancreas, cervix, stomach, blood, and bone marrow (acute myeloid leukemia).
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