Longevity & AgingDirty Air Triggers More Rheumatoid Arthritis Flares, Large Korean Study Finds
A new study from South Korea found that fine particulate air pollution significantly worsens rheumatoid arthritis outcomes. Researchers tracked over 1,000 RA patients across four years, finding that for every 6 µg/m³ rise in PM2.5 particles, the odds of an RA flare increased by 11%. Disease activity scores also climbed measurably with higher pollution levels. Other pollutants like nitrogen oxides and ozone showed similar trends but didn't reach statistical significance. The findings suggest environmental air quality is an underappreciated driver of autoimmune disease activity, potentially relevant beyond RA to other inflammatory conditions. Patients and clinicians rarely track air pollution exposure, but this research suggests it may be as important as known triggers like smoking.
