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Decisive action is needed as more than 1 in 4 high school students report using e-cigarettes, and e-cigarette use among 8th, 10th, and 12th graders has more than doubled in the past two years

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Bronchial biopsies have demonstrated that marijuana users show not only manifest airway inflammation but also histopathological and/or molecular changes indicative of precancerous bronchial activity [50, 51]

Ottawa, Ontario: Statistics Canada (2018)

In vapers, blood flow increased after inhaling and after stress