Date Published: 11/13/2007 [Source]
Lung cancer is a worldwide health concern, taking 1.2 million lives every year.
About 90 percent of cases are in smokers or former smokers. The best way to avoid the disease is not to smoke.
Lung cancer risk is also raised by exposure to radon, asbestos, and hydrocarbons. A few occupational hazards, such as firefighting, have been directly linked to the disease.