I Know My Radon Level
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What is my risk and how urgent is it for me to do something?

Use your radon test result from your home and/or buildings and the risk table below to understand your risk of lung cancer from radon. Visit How to Reduce My Risk to find information about what to do next.

All levels of radon can cause lung cancer. The following factors affect your risk:

  • Concentration of radon,
  • Amount of exposure to radon over a lifetime, and
  • Exposure to tobacco smoke. 

Radiation released from radon gas particles can damage DNA which can lead to lung cancer. In general, the higher the radon level and the more time a person is exposed to radon the more damage to lung tissue that occurs. This results in a greater chance of developing the disease. “There is no [radon] level that is considered risk free” (Health Canada). In addition, if a person smokes, or is exposed to environmental tobacco smoke and radon the risk of lung cancer is much higher. Learn how to reduce your risk of lung cancer from radon.

Table 1: Risk of Lung Cancer per 1000 people when exposed to different levels of radon gas based on a lifetime (70 years) of exposure. Note: Health Canada recommends lowering radon levels to as low as reasonably achievable.





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