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New study may help explain why Ontario teens are feeling so distressed

  • The number of teenagers reporting symptoms of depression and anxiety has nearly tripled from 10.7% in 2013 to 27.4% in 2023, according to a study published in the journal Addiction.
  • Youth who used cannabis 40 or more times a year reported an 18% higher prevalence of psychological distress in 2023, as noted in the study.
  • The study analyzed data from over 35,000 students in grades seven through twelve, revealing significant mental health concerns among teens.
  • André McDonald, a post-doctoral fellow at McMaster University, is the lead author of the study published in the journal Addiction.
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Barrie TodayBarrie Today
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New study may help explain why Ontario teens are feeling so distressed

Tonight on 'Closer Look': The number of teenagers reporting symptoms of depression and anxiety has nearly tripled over the past decade — and cannabis use may have something to do with that

·Barrie, Canada
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Barrie Today broke the news in Barrie, Canada on Wednesday, February 4, 2026.
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