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Occupational and environmental exposure to inorganic dust during military service is associated with increased risk of sarcoidosis among U.S. Veterans.

In a retrospective nested case-control study of 3,019,636 U.S. Veterans with at least one military occupational code, inorganic dust exposure was associated with a modestly increased risk of sarcoidosis (conditional odds ratio [cOR] 1.08; 95% CI 1.003-1.170). The attributable fraction among the exposed was 7.6%, and the association was stronger when using a modified job exposure matrix (cOR 1.15; 95% CI 1.05-1.27) and when restricted to post-9/11 Veterans (cOR 1.25; 95% CI 1.07-1.47).

Last updated: Aug 16, 2026•0 RCTs•📖 Read as article →

Evidence Score

Evidence Score34/100
Human RCT☆☆☆☆☆
Meta-analysis☆☆☆☆☆
Mechanism★★★★★
Safety★★★★☆
Confidencelow

Study Evidence

Study 1. Sarcoidosis risk among U.S. Veterans exposed to inorganic dust during military service.

observational

Seedahmed MI, Boudreaux-Kelly M, Tjader A, Blanc PD, Gibson KF, Nouraie SM, Gellad WF, Koth LL · Annals of the American Thoracic Society (2026)

Participants: N/A
Duration: 2002-2022
Intervention: Estimated service-related exposure to inorganic dust, derived from linking military occupational codes (MOCs) to a job exposure matrix (JEM).
Outcome: Incident sarcoidosis diagnosis identified in electronic health records between 2002 and 2022.
Effect Size: cOR = 1.08 (95% CI 1.003-1.170); attributable fraction = 7.6%
Population: U.S. Veterans enrolled in the Veterans Health Administration (VHA) who received VHA- or Medicare-covered care, with at least one military occupational code (3,019,636 Veterans; 5,855 incident cases and 29,275 controls).

Result:

PubMed: 42550181DOI: 10.1093/annalsats/aaoag236

Mechanism Graph

Inorganic dust exposure during military service triggers an inflammatory response in susceptible individuals.
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Chronic inflammation leads to granuloma formation, characteristic of sarcoidosis.
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Latency analysis shows peak risk 2-5 years post-service (cOR 2.10; 95% CI 1.20-3.58), suggesting a delayed immune-mediated process.
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Result: Increased incidence of sarcoidosis among exposed Veterans.

Limitations

  • ⚠Exposure misclassification due to reliance on military occupational codes and job exposure matrix, which may not accurately reflect individual exposure levels.
  • ⚠Residual confounding from unmeasured factors such as smoking, socioeconomic status, or other environmental exposures not fully adjusted for.
  • ⚠Retrospective design limits causal inference; only association can be established.

Frequently Asked Questions

What is the risk of sarcoidosis in Veterans exposed to inorganic dust?▼

The study found a 8% increased risk (cOR 1.08) compared to unexposed Veterans, with a stronger effect (25% increased risk) in post-9/11 Veterans.

How was inorganic dust exposure measured?▼

Exposure was estimated by linking military occupational codes (MOCs) to a job exposure matrix (JEM), which classifies occupations by potential for inorganic dust exposure.

What is the latency period between exposure and sarcoidosis diagnosis?▼

The risk of sarcoidosis peaked 2-5 years after service separation, with a cOR of 2.10 (95% CI 1.20-3.58).

What are the implications for Veterans' health surveillance?▼

The findings suggest that Veterans with known inorganic dust exposure may benefit from targeted surveillance for sarcoidosis, especially within the first few years after service.

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References

  1. 1.Seedahmed MI, Boudreaux-Kelly M, Tjader A, Blanc PD, Gibson KF, Nouraie SM, Gellad WF, Koth LL. "Sarcoidosis risk among U.S. Veterans exposed to inorganic dust during military service.." Annals of the American Thoracic Society, 2026. PMID: 42550181 DOI: 10.1093/annalsats/aaoag236
Disclaimer: This content is for educational purposes only and is not medical advice. Evidence scores reflect the quality and quantity of available research, not clinical recommendations. Always consult a healthcare professional before starting any supplement or intervention.