Dr. Jared Weiss, UNC Lineberger Comprehensive Cancer Center, discusses smoking, asbestos, radon and other risk factors for lung cancer.

As we head in to National Lung Cancer Awareness Month, we are all aware of the role cigarettes and tobacco play in the cause of lung cancer. We also are aware that not ALL lung cancers are caused by smoking, and that 10% of men and 20% of women who are diagnosed in the U.S. with lung cancer are never-smokers.