It is widely known that the major cause of lung cancer is smoking. However, there is another leading cause of lung cancer that may be surprising. The EPA estimates that the number one cause of non-smokers getting lung cancer is radon, causing 21,000 lung cancer deaths every year. According to the American Lung Association, radon is a colorless, tasteless and odorless gas that causes lung cancer. The EPA states that radon can be found in indoor air, in soil under homes and in drinking water.
