US EditionDoctors are seeing more non-smokers, especially women, with later-stage lung cancer
About 25% of lung cancer cases in Canada occur in non-smokers, with radon exposure and air pollution identified as leading causes, doctors report a notable rise over 20 years.
- Amid growing cases, Canadian doctors are noticing more non-smokers diagnosed with lung cancer, first reported Aug. 18, 2025.
- The Canadian Cancer Society estimates about a quarter of lung cancer cases in non-smokers, with Health Canada identifying radon as the top cause among them.
- Amid rising non-smoking cases, Dr. Rosalyn Juergens, medical oncologist at McMaster University and Hamilton Health Sciences Centre, said she `absolutely` saw a rise over about 20 years and `we are definitely seeing more and more`.
- In Hulan’s case, targeted therapy extended her life expectancy from six months to five to six years, and a biopsy revealed an ALK genetic mutation.
- Since 2022, organized lung cancer screening programs in British Columbia, Ontario and Nova Scotia target smokers only, while more women will die of lung cancer than breast, ovarian and cervical cancers combined.
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Katie Hulan's family doctor thought she was suffering from asthma. Her cough, which appeared about a month and a half earlier, was gradually increasing, so she was prescribed inhalers, but without success.
·Montreal, Canada
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Doctors are seeing more non-smokers, especially women, with later-stage lung cancer
Doctors are seeing a growing number of non-smokers with lung cancer. Although smoking remains the leading risk factor, the Canadian Cancer Society estimates about a quarter of lung cancer cases in the country are non-smokers.
·Canada
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Total News Sources11
Leaning Left4Leaning Right2Center4Last UpdatedBias Distribution40% Left, 40% Center
Bias Distribution
- 40% of the sources lean Left, 40% of the sources are Center
40% Center
L 40%
C 40%
R 20%
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