The association between air pollutants and depression in children and adolescents: a systematic review

Depression is a common disease with a high prevalence among children and adolescents. Emerging evidence suggests that air pollution can increase the risk of depression. However, studies examining the relationship between air pollution and depression in children and adolescents are still in their nascent stages. We conducted a systematic review of current studies to investigate how air pollution and air quality issues relating to wildfires affect depression in children and adolescents aged 6 to 19. Our study found that both wildfire-related air exposure and air pollution may be associated with an increased risk of depression among children and teenagers. Ozone exerts a short-term impact on depression in young populations, whereas fine particulate matter (PM2.5) and NO2 have a long-term impact. Heterogeneity exists across studies, necessitating further investigation. Attention should be paid to the effects of air pollution and wildfires on the mental health of children and adolescents.