Leading Cause of Lung Cancer Could Be Hidden in Your Home [Video]

Most Americans haven’t had their homes tested for the presence of radon, an odorless gas that causes cancer.

Radon is an “invisible radioactive gas” that’s naturally released from rocks and soil. According to the Centers for Disease Control, it’s the second leading cause of lung cancer behind cigarette smoking.

The gas can get into homes through small cracks, the CDC says — but about 75% of Americans haven’t had their homes tested for the presence of the gas, according to a report issued by The Ohio State University Comprehensive Cancer Center.

Radon causes 20,000 lung cancer deaths a year because its radioactive particles “can damage the cells that line the lung,” the National Cancer Institute says.

“Anyone with lungs can develop lung cancer, and as a community we should be aware and concerned about radon exposure because it’s thought to be one of the leading causes of …