1 in 4 lung cancer patients are non-smokers
November 26th, 2009
When someone is diagnosed with or dies of lung cancer, the first question people often ask is, “Was he or she a smoker?”
Although most lung cancers are caused by smoking, a 2007 review found that about 25 percent of lung cancer cases worldwide — accounting for over 300,000 deaths each year — are not attributable to tobacco use.