Radon is a naturally occurring radioactive gas. It is released during the natural decay of uranium, which is found in most rock and soil. Radon is odorless, invisible, and without taste.
Although certain areas of the state have higher levels of radon then others, radon has been detected in every county in Tennessee.
Radon, like other radioactive materials, undergoes radioactive decay that forms decay products. Radon and its decay products release radioactive energy that can damage lung tissue in a way that causes the beginning of lung cancer. The more radon you are exposed to, and the longer the exposure, the greater the risk of eventually developing lung cancer.
Radon is the second leading cause of lung cancer in the United States, resulting in 15,000 to 22,000 deaths per year. Radon causes lung cancer in non-smokers and smokers alike.
Test your home for radon! There are no exceptions! Every home in Tennessee should be tested especially when you consider the fact that radon related lung cancer kills approximately 22,000 people each year.
(via the TN.gov website)