How does lung cancer start?
Lung cancer may first develop because of a genetic predisposition, Dr. Nader explains. Some abnormal gene mutations may increase a patient’s vulnerability to cancer-causing stimuli, such as cigarette smoke, radon gas or other carcinogens.
Learn about lung cancer symptoms
Daniel A. Nader: Well, we think that the lung cancer usually starts by a stimulus or some genetic predisposition. There may be some abnormal genes that make a patient more susceptible to lung cancer due to a stimulus such as cigarette smoke or secondhand smoke or other carcinogens like radon gas.