Oxidative Balance, Inflammation Linked to RA Mortality

Higher oxidative balance was associated with lower mortality, while greater systemic inflammation was linked to increased risk in a US cohort of patients with rheumatoid arthritis.

By
Andrea Surnit
April 20, 2026
3 min

Conexiant

Objective:

To investigate the relationship between oxidative balance, systemic inflammation, and all-cause mortality in patients with rheumatoid arthritis.

Approach:

Key Findings:

Each 1-point increase in oxidative balance score was associated with a 4% lower mortality risk.
Patients with higher oxidative balance scores had a 37% lower mortality risk compared to those with lower scores.
Each 1-unit increase in systemic inflammation response index was linked to a 14% higher mortality risk.
Patients with high systemic inflammation and low oxidative balance had the poorest survival outcomes.
Mediation analysis indicated that improved oxidative balance may reduce mortality risk by attenuating systemic inflammation.

Interpretation:

The study suggests that enhancing oxidative balance may be beneficial for reducing mortality risk in rheumatoid arthritis patients, particularly those with elevated inflammation levels.

Limitations:

Oxidative balance and inflammatory status were measured at a single time point.
Potential measurement error due to reliance on 24-hour dietary recall data.
Diagnosis of rheumatoid arthritis was based on self-report, which may introduce bias.
Residual confounding cannot be excluded, and the observational design limits causal inference.

Conclusion:

The findings highlight the importance of oxidative balance and systemic inflammation in mortality risk among rheumatoid arthritis patients, suggesting potential avenues for risk stratification and management.