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Thank you for your interest in testing with the Evict Radon National Study

The Evict Radon National Study is a national research study involving researchers and scientific partners from across Canada who are dedicated to solving Canada’s significant and worsening radon-gas exposure problem. Radon is a substantial cause of lung cancer even in non-smokers. By testing your home with our at-cost, research-grade radon test kits and enrolling in our national, public university-based research study, you are helping researchers from across Canada to understand radon exposure and develop new ways to protect ourselves and loved ones.

Common practice stated that winter is the optimal time to radon test. However, as we collect more data, we have determined little difference between winter and spring radon testing. We do, however, encourage our participants to test over seasonal change. At this time, the best and most accurate radon readings obtained during the spring and summer months are those that are longer than 6 months. 

What is Radon?

Repetitive Long-Term Exposure to Radon Gas is the Leading Cause of Lung Cancer in People Who Do Not Smoke Tobacco. 

What is radon?

Radon is an invisible, odourless, tasteless and radioactive gas. Although it arises naturally from under the ground, radon gas is often drawn up and concentrated inside modern buildings to unnaturally high and cancer-causing levels in indoor air. Thus, high radon exposure is a human-made problem, but it is solvable. By participating in our study, you are helping researchers understand the factors that lead to high radon.  

Why is radon gas harmful?

Radon is radioactive and unstable. In a very short period of time, it decays and emits alpha particle radiation, which severely damages our DNA in such a way that is almost impossible for our bodies to repair without introducing genetic errors (mutations). These errors trigger a worsening cycle of DNA mutation that drives cancer formation. Hence, radon is listed as a category 1 carcinogen (cancer-causing agent), meaning that it is known to cause cancer in humans. As radon is inhaled into our lungs, it primarily triggers the formation of lung cancer – the number one cause of cancer death in Canada – even in folks who have never smoked. Younger people, especially children, are the most at risk from the DNA damage caused by radon exposure. The risk of cancer goes up with greater radon levels and prolonged exposure over a lifetime. 

Radon and lung cancer

  • Large population studies show clearly that a person’s lifetime relative risk of lung cancer becomes statistically significant at levels at or more than >100 Bq/m3 of long-term radon exposure.
  • There is an additive ~16% increase in relative lifetime risk of lung cancer for every 100 Bq/m3 of long-term radon exposure a person experiences. This finding was based on three independent studies (one in North America, another in Europe, and one from China) involving >10,000 lung cancer patients and >10,000 healthy controls all published in 2004 – 2005.
  • Using over 29,000 radon-tested properties, our 2021 study showed that radon exposure is occurring at levels known to cause cancer, with the top 10 highest exposures seeing the equivalent of 1500 – 12,000 chest x-rays worth of radiation per year!

Learn more about radon and how to test:

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