Knowing what can cause lung cancer is important in avoiding this disease in the first place or as early as possible.
Tobacco smoking causes lung cancer which accounts for about 90% of all cases of lung cancer.
Secondhand smoking is a major risk factor that increases chances of developing lung cancer by a great extent for people who do not even smoke.
Radon is a naturally occurring gas that is radioactive and is the second leading cause of lung cancer, it may also seep into homes.
Carcinogenic substances like Asbestos, Arsenic and Diesel exhaust also at work increase lung cancer by far.
Lung cancer in a family member increases the risk by two folds, although this can be boosted by other conditions such as smoking.
These are conditions that can help one to minimize his/her likelihood of getting lung cancer, thus anybody experiencing them should act appropriately.