Radon is a naturally-occurring invisible, odorless gas that is usually harmless when dispersed outdoors. When trapped in buildings, however, radon can be harmful and can cause lung cancer in humans, according to the United States Environmental Protection Agency (EPA). Radon is occurs naturally in soil and rock. It moves upward through the soil and enters buildings through cracks and openings in the foundation floor or walls.

Radon is the leading cause of lung cancer among non-smokers, and according to the EPA, is responsible for approximately 14,000 deaths nationally each year.

Elevated levels of radon would be expected in approximately one out of 20 homes in Macomb County, said White.

“People don’t think of radon because it’s not only odorless and colorless, it also doesn’t cause symptoms such as headaches, nausea, fatigue, or skin rashes,” said White.

The free kits are available at the Macomb County Health Department offices at 43525 Elizabeth Road, Mount Clemens; and 27690 Van Dyke Ave, Warren.

For more information about radon or testing, call the Health Department at 586-469-5236 from 8:30 a.m. to 5 p.m. Monday through Friday, or visit www.macombcountymi.gov/publichealth/EH/Radon.htm.