CNN Central News & Network-ITDC India Epress/ITDC News Bhopal: Toxic air may increase risk of suicidal behaviour, study finds
The impact of air pollution may not be limited to the lungs and the heart, with a link to mental health also emerging. Researchers at Queen’s University Belfast in the United Kingdom reviewed 45 studies. A meta-analysis was conducted on data from 29 of these studies. The research found an association between some air pollutants and suicide, suicide attempts and suicidal thoughts.
According to the study, short-term exposure to very small pollutant particles such as PM2.5 and PM10, and long-term exposure to PM2.5 and nitrogen dioxide (NO2), showed a statistical association with the risk of suicidal behaviour. Possible links were also indicated in the case of other pollutants such as sulphur dioxide and ozone.
Scientists said air pollution may be linked to inflammation in the body and changes related to the nervous system, which can affect mood and the ability to cope with stress. However, experts advised that the findings should be interpreted with caution. Most of the research included in the study is observational, so it cannot be concluded that pollution directly causes suicidal thoughts or attempts. Other factors, such as socio-economic status, urban life, housing and health, may also play a role.
The researchers said environmental risks should also be taken into account in mental health and suicide prevention strategies. The study was published in the Journal of Epidemiology & Community Health on September 15, 2026.
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