ArticleBMJ mental health2024
Suicide deaths associated with climate change-induced heat anomalies in Australia: a time series regression analysis.
Article in BMJ mental health, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Association of short-term ambient environmental exposures with suicide and drug overdose deaths among U.S. veterans.American journal of epidemiology · 2026Article
- [Association between temperature, duration of sunshine and suicidal mortality in Germany (2015-2023)].Der Nervenarzt · 2026Article
- Independent and interactive effects of wet bulb globe temperature and air pollution exposures on suicide mortality.Environment international · 2026Article
- Mental health research for a world in climate crisis.BMJ mental health · 2026Article
- A systematic review of the association between climate change and suicidality reveals that climate indicators increase suicide rates.Global mental health (Cambridge, England) · 2026Review
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Authors and funding
7 authors.
Funding
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Abstract
backgroundAlthough environmental determinants play an important role in suicide mortality, the quantitative influence of climate change-induced heat anomalies on suicide deaths remains relatively underexamined.
objectiveThe objective is to quantify the impact of climate change-induced heat anomalies on suicide deaths in Australia from 2000 to 2019.
methodsA time series regression analysis using a generalised additive model was employed to explore the potentially non-linear relationship between temperature anomalies and suicide, incorporating structural variables such as sex, age, season and geographic region. Suicide deaths data were obtained from the Australian National Mortality Database, and gridded climate data of gridded surface temperatures were sourced from the Australian Gridded Climate Dataset.
findingsHeat anomalies in the study period were between 0.02°C and 2.2°C hotter than the historical period due to climate change. Our analysis revealed that approximately 0.5% (264 suicides, 95% CI 257 to 271) of the total 50 733 suicides within the study period were attributable to climate change-induced heat anomalies. Death counts associated with heat anomalies were statistically significant (p value 0.03) among men aged 55+ years old. Seasonality was a significant factor, with increased deaths during spring and summer. The relationship between high heat anomalies and suicide deaths varied across different demographic segments. CONCLUSIONS AND IMPLICATIONS: This study highlights the measurable impact of climate change-induced heat anomalies on suicide deaths in Australia, emphasising the need for increased climate change mitigation and adaptation strategies in public health planning and suicide prevention efforts focusing on older adult men. The findings underscore the importance of considering environmental factors in addition to individual-level factors in understanding and reducing suicide mortality.
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