Radon is the second leading cause of lung cancer in Canada. Radon exposure is estimated to be the cause of 16% of lung cancers. Radon decays quickly, giving off tiny radioactive particles. When inhaled, these radioactive particles can damage the cells that line the lung. Long-term exposure to radon can lead to lung cancer.
If you live in a building with high radon levels (or if you spend a lot of time in one), you are at higher risk for lung cancer.
If you smoke and you live in a home with a high level of radon, you are at an even higher risk for lung cancer.