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Characteristics and Circumstances of US Overdose Deaths With Recorded Heat Involvement
Journal of Addiction Medicine
|August 12, 2026
Summary
Fatal drug overdoses involving heat exposure are increasing, particularly in certain states and among specific demographics. These deaths often involve psychostimulants and occur in public outdoor locations.
Area of Science:
- Public Health
- Toxicology
- Environmental Health
Background:
- Drug overdose deaths are a significant public health concern in the United States.
- The co-occurrence of heat-related factors in fatal drug overdoses is not well-characterized.
Purpose of the Study:
- To investigate the frequency and trends of heat-related causes in fatal drug overdoses.
- To analyze demographic and geographic variations in these events.
- To compare characteristics of overdose deaths with and without recorded heat involvement.
Main Methods:
- Analysis of US death certificate data for drug overdose deaths from 2001-2024.
- Identification of cases with recorded heat-related causes of death.
- Application of joinpoint regression, descriptive statistics, and nonparametric tests for trend and comparative analyses.
Main Results:
- Deaths involving heat exposure rose from under 10 in 2001 to 558 in 2024.
- Mortality rates increased significantly (30.1% annually) from 2013-2024, with highest rates in Arizona and Nevada.
- Overdoses with heat involvement disproportionately affected American Indian/Alaska Native, Mexican-heritage, and foreign-born populations, and were linked to psychostimulants and outdoor locations.
Conclusions:
- Fatal drug overdoses with recorded heat involvement are a growing concern.
- These events disproportionately impact specific states and demographic groups.
- Understanding these patterns is crucial for targeted public health interventions.
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