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<p>Wildfire-specific fine particulate matter (PM<sub>2.5</sub>) is an increasing public health concern given its greater toxicity than non-wildfire PM<sub>2.5</sub>. However, little is known about its impacts on the mental health of children and adolescents ≤19 years (for example, substance use, anxiety and depression). Here we estimate associations of wildfire-specific PM<sub>2.5</sub> with emergency department (ED) visits for child mental disorders across 845 communities in Australia, Brazil and Canada during 2004‒2019, comparing with that of non-wildfire PM<sub>2.5</sub>. Each 1 µg m<sup>−</sup><sup>3</sup> increase in daily wildfire-specific PM<sub>2.5</sub> was associated with a 1.4% (1.4‒1.5%) increase in child mental health-related ED visits 6 days following exposure. Stronger associations were observed for schizophrenia, boys, children under 5 years, low-income or more urbanized communities, communities with higher levels of PM<sub>2.5</sub> from non-wildfire sources, and Brazil. Annually, wildfire-specific PM<sub>2.5</sub> was responsible for an estimated 22,459 (22,131‒22,782) ED visits for child mental disorders, posing greater risks to substance use, bipolar affective disorder, depression and anxiety than non-wildfire PM<sub>2.5</sub>. Urgent action is needed to mitigate the mental health impacts of wildfire air pollution, safeguarding the well-being of future generations in the face of increasing wildfires.</p>

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Wildfire-sourced fine particulate matter and mental disorders in children and adolescents

  • 期刊论文

  • 发表日期：

    2026年2月4日

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  • Yiwen Zhang,
  • Shuang Zhou,
  • Rongbin Xu,
  • Zhengyu Yang,
  • Wenzhong Huang,
  • Paulo H. N. Saldiva,
  • Wenhua Yu,
  • Gongbo Chen,
  • Micheline S. Z. S. Coelho,
  • Tingting Ye,
  • Yanming Liu,
  • Pei Yu,
  • Eric Lavigne,
  • Jiangning Song,
  • Yuming Guo,
  • Shanshan Li

摘要

Wildfire-specific fine particulate matter (PM2.5) is an increasing public health concern given its greater toxicity than non-wildfire PM2.5. However, little is known about its impacts on the mental health of children and adolescents ≤19 years (for example, substance use, anxiety and depression). Here we estimate associations of wildfire-specific PM2.5 with emergency department (ED) visits for child mental disorders across 845 communities in Australia, Brazil and Canada during 2004‒2019, comparing with that of non-wildfire PM2.5. Each 1 µg m−3 increase in daily wildfire-specific PM2.5 was associated with a 1.4% (1.4‒1.5%) increase in child mental health-related ED visits 6 days following exposure. Stronger associations were observed for schizophrenia, boys, children under 5 years, low-income or more urbanized communities, communities with higher levels of PM2.5 from non-wildfire sources, and Brazil. Annually, wildfire-specific PM2.5 was responsible for an estimated 22,459 (22,131‒22,782) ED visits for child mental disorders, posing greater risks to substance use, bipolar affective disorder, depression and anxiety than non-wildfire PM2.5. Urgent action is needed to mitigate the mental health impacts of wildfire air pollution, safeguarding the well-being of future generations in the face of increasing wildfires.