Inhaling radon gas can cause lung cancer
Radon is a cancer-causing natural radioactive gas that you can’t see, smell or taste. Its presence in your home can pose a danger to your family's health. Radon is the leading cause of lung cancer among non-smokers. Radon is produced by the natural breakdown of uranium. Therefore, concerns have been raised about houses in some parts of the United States built over soil with natural uranium deposits.
Other sources of secondary asbestos exposure: fibers