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# Vietnam theater veterans had higher accidental and lower intentional overdose death risk
- URL: https://www.coios.me/vietnam-theater-veterans-had-higher-accidental-and-lower/
- Published: 2026-11-03T13:00:56.000Z
- Updated: 2026-11-03T17:56:56.000Z
- Description: Among 9,496,285 US Vietnam War-era veterans, those deployed to Vietnam had higher accidental and lower intentional overdose mortality.
- Author: Daniel Ryan
- Tags: Behavioural science, Alcohol and drug use, United States, #peer-reviewed, #refines, #item, #source-2026-11, #score-60

This retrospective cohort study followed 9,496,285 US Vietnam War-era veterans from 1979 to 2021, using adjusted Cox models. Theater veterans (2,443,567) had higher risk of all (HR 1.03) and accidental (HR 1.08) overdose mortality than non-theater veterans. Their risk of intentional overdose mortality was lower (HR 0.90). For 1999–2021, the largest excess was in accidental overdoses involving stimulants without opioids (HR 1.20). Crude overdose rates rose in both groups and were higher overall among non-theater veterans (12.87 versus 10.01). As an observational comparison adjusted only for recorded covariates, it cannot exclude residual confounding.

*Why it is interesting: Crude overdose mortality rates rose in both groups over four decades after service ended. Deployment to Vietnam was linked to higher accidental but lower intentional overdose risk than service elsewhere.*

Source

[Addiction, 2 November 2026](https://doi.org/10.1111/add.70699?ref=coios.me)

Paper

A retrospective cohort analysis of risk of drug overdose deaths among US Vietnam War-era veterans, 1979-2021

Authors

Bullman TA, Ashrafioun L, Morley SW, Akhtar FZ, Weitlauf JC, Lowe KL et al.

DOI

10.1111/add.70699

Type

Peer-reviewed article

Design

Retrospective cohort, 9,496,285 US Vietnam War-era veterans (2.44m theatre, 7.05m non-theatre), overdose mortality 1979-2021, Cox models and AAPC

Verdict

Refines prior evidence

Driver

[Alcohol and drug use](https://www.coios.me/d-alcohol-drugs/)