What are the risk factors for lung cancer?
Lung cancer is an abnormal growth of cells that originates in the lung and can spread and grow to other parts of the body without any kind of normal regulation by the body or its normal immune system. Risk factors for lung cancer include tobacco smoke, which is one that everyone knows, but also other substances such as asbestos, certain types of chemicals, and radon exposure. The substances that act on the lung, primarily tobacco smoke, are full of things called carcinogens, which act on the cells in the lung to cause them to grow abnormally and cause them to become cancerous.