Radon is a colorless, odorless gas that you can unknowingly breathe in from your home. Learn about its health effects and how to reduce levels.

Radon is an odorless and invisible radioactive gas naturally released from rocks, soil, and water. Radon can get trapped inside homes and buildings, and build up in the air. Over time, breathing in high levels of radon can cause lung cancer.

Exposure to radon is the second leading cause of lung cancer after smoking. Radon is a colorless, odorless, tasteless and invisible gas produced by the decay of naturally occurring uranium in soil and water.

Radon.com is the trusted online source for radon solutions and information. Learn effective strategies to protect your home or workplace from radon exposure.

Breathing high levels of radon over time can lead to lung cancer since this gas is a Class A carcinogen. Learn more from Mayo Clinic.

Radon and Cancer Risk Exposure to radon is the leading cause of lung cancer in people who don’t smoke. Getting your home tested for radon can help protect you and your family and reduce your cancer risk.

WHO fact sheet on radon and cancer: includes key facts, definition, health effects, radon in homes, radon in drinking water, WHO response.