5 reasons for cancer of the lung in non-smokers – medicinenet.com
Contents Lung Cancer Medical Author: Melissa Conrad Stoppler, MD Medical Editor: Jay W. Marks, MD While smoking cigarettes is an undisputed reason for lung cancer, not every cases of cancer of the lung exist in smokers or former smokers. Every year, over 170,000 Americans develop cancer of the lung, and roughly ten percent of lung …