Heatwaves worsen children's mental health

A systematic review and meta-analysis published in the International Journal of Epidemiology found that high temperatures and heatwaves are associated with poorer mental health outcomes in children and adolescents aged 5-18. Analyzing 23 global studies, the researchers found that adverse mental health outcomes increase by almost 1% for every 1°C rise in daily temperature, with a 25% increased risk during heatwaves and a 1.5% increased risk with higher temperatures. Children and teenagers are particularly vulnerable due to physiological and behavioral susceptibility, developmental sensitivity, and disruptions to sleep, education, and recreation. The study, led by researchers from Flinders University and the University of Canberra, highlights the need to integrate mental health into climate adaptation efforts and develop targeted interventions such as cooler classrooms and shaded outdoor spaces. The findings also note higher risks in developed countries, potentially due to urban heat islands and better reporting, while weaker effects in middle-income countries may reflect under-reporting.