Radon is a contaminant that affects indoor air quality worldwide. According to the United States Environmental Protection Agency (EPA), radon is the second most frequent cause of lung cancer, after cigarette smoking, causing 21,000 lung cancer deaths per year in the United States.

Apr 13, 2023 · Learn where you’re likely to find high levels of radon, how to test for it, and how it can impact your health. What is radon? Radon is a naturally occurring radioactive gas. It’s produced...

Mar 3, 2025 · Radon is a colorless, odorless, tasteless and invisible gas produced by the decay of naturally occurring uranium in soil and water. Exposure to radon is the second leading cause of lung cancer after smoking.

Nov 7, 2024 · Radon is a naturally occurring gas, but too much exposure over time can lead to serious health conditions. Luckily, there are ways to test for and reduce high radon levels. If you find you have high levels of radon where you live or work, don’t panic.

Feb 16, 2024 · 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. All …

Aug 7, 2024 · Radon is a radioactive gas you can't see, feel, taste, or smell. It forms naturally when uranium — a heavy metal found in the ground and most rocks on the planet — decays, turning into another...

Jan 25, 2023 · Radon is one of the leading causes of lung cancer. Radon is estimated to cause between 3% to 14% of all lung cancers in a country, depending on the national average radon level and smoking prevalence. Lung cancer risk is higher for smokers due to synergistic effects of radon and cigarette smoking.

Feb 27, 2025 · Radon is the number one cause of lung cancer among non-smokers, according to EPA estimates. Overall, radon is the second leading cause of lung cancer. Radon is responsible for about 21,000 lung cancer deaths every year. About 2,900 of these deaths occur among people who have never smoked.

Radon is found in groundwater, bedrock, and soil and can creep into your home. Reducing radon levels in the home can help lower the risk of lung cancer. Testing your home is the only way to know if radon levels are high. A collection of CDC features and personal stories about how to reduce radon risk. Radon communication resources from CDC.

Feb 15, 2024 · Radon is a radioactive gas that is naturally released in the air from rocks and soil. It can be found in the air outside and can build up inside buildings and homes. There is no known safe level of radon. Aiming for the lowest radon level you can achieve in your home will reduce your risk of harmful health effects, including lung cancer.