Cigarette smoking is the leading cause of lung cancer, but it is also possible to develop lung cancer from exposure to other carcinogens such as radon gas or asbestos. Even if you don’t smoke yourself, exposure to secondhand smoke can increase your risk of developing lung cancer; Air pollution; Radon is a naturally occurring radioactive gas, is the following most frequent cause of lung cancer and the major cause among persons who does not smoke. Radon is a uncoloured and unscented gas which can seep into houses and workplace; that approximately 1 in 4 smokers will be diagnosed with lung cancer during their lifetime; Previously had radiation therapy to your chest for another condition; Has received large doses of X-rays as part of medical treatment; Increase of risk of having lung cancer if your parent, sibling or child has diagnosed with lung cancer.



