Queens University Belfast has issued a warning that exposure to PM 2.5 and PM 10 particles can increase the risk of suicide, suicide attempts, and suicidal thoughts, based on an analysis of 29 different studies. The research also indicates that long-term exposure to nitrogen dioxide is associated with heightened risk. Globally, over 720,000 people die from suicide every year.
Air pollution generated by vehicles and fossil fuels has been identified as a major factor contributing to the increased risk of suicide. Researchers at Queens University Belfast analyzed data from 29 studies and confirmed that both short- and long-term exposure to PM 2.5 particles elevates the likelihood of suicide, suicide attempts, and suicidal ideation.
The researchers stated, “These findings highlight the need to recognize environmental factors as risk contributors in suicide prevention efforts and suggest necessary improvements.” However, some experts urge cautious interpretation of these results. Associate Professor Alexander Larcombe from Curtin University commented, “While the proposed mechanism is biologically plausible, the research does not conclusively prove that pollution directly causes suicide.”
