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Related Experiment Video

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Non-invasive Assessments of Subjective and Objective Recovery Characteristics Following an Exhaustive Jump Protocol

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Changes over time in the "healthy soldier effect".

Michael Waller¹, Annabel Cl McGuire

¹University of Queensland, The Centre for Military and Veterans' Health, Mayne Medical School, 288 Herston Road, Herston, Queensland, 4006, Australia. m.waller@uq.edu.au.

Population Health Metrics

|March 16, 2011

Summary

The healthy soldier effect, where military personnel have lower death rates, varies by time and cause of death. This effect, particularly for circulatory diseases, persisted for over 30 years in some Australian veteran cohorts.

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Area of Science:

Military health research
Epidemiology
Public health

Background:

Military populations often exhibit lower mortality rates than civilian populations, a phenomenon known as the healthy soldier effect.
This study investigates the temporal dynamics of the healthy soldier effect.

Purpose of the Study:

To analyze how the healthy soldier effect changes over time in Australian servicemen.
To examine variations in the healthy soldier effect based on cause of death and specific military cohorts.

Main Methods:

Utilized standardized mortality ratios to compare death rates of Australian servicemen against the general population.
Analyzed data from two large cohorts: Korean War (n=17,381) and Vietnam War era (n=83,908) servicemen.

Main Results:

The healthy soldier effect was most prominent for circulatory disease deaths, with initial deficits observed up to 20 years post-service.
No healthy soldier effect was found for external cause deaths in enlisted personnel; rates were higher than expected in some Korean War and Vietnam War veteran groups.
National service draftees during the Vietnam War era showed the strongest healthy soldier effect.

Conclusions:

The manifestation of the healthy soldier effect is inconsistent, differing significantly across study cohorts and causes of death.
Evidence suggests the healthy soldier effect can persist for over 30 years in certain military populations.