
PM2.5 exposure was associated with higher disease activity and flare risk in people with rheumatoid arthritis, according to a study published in Annals of the Rheumatic Diseases. Researchers tracked more than 1,000…
PM2.5 exposure was associated with higher disease activity and flare risk in people with rheumatoid arthritis, according to a study published in Annals of the Rheumatic Diseases. Researchers tracked more than 1,000 patients across 12,583 outpatient visits at a South Korean medical centre between 2021 and 2024. They matched monthly levels of six pollutants with disease outcomes. PM2.5 alone was linked to higher disease activity scores, tender and swollen joint counts, and increased flare risk. Exposure lasting more than two weeks also raised flare risk. The association with disease activity was stronger among women and non-smokers. Researchers advised patients to avoid prolonged exposure to poor air quality.
The lazy narrative would be that polluted air directly causes every rheumatoid arthritis flare, or that personal precautions can replace treatment. This study shows an association, not proof that PM2.5 alone caused the outcomes. It also examined patients at one South Korean medical centre, so the findings may not apply equally everywhere. Still, avoiding prolonged exposure is a sensible step while researchers test whether cleaner air reduces flares. Replication across Indian cities and clearer exposure thresholds should settle how much risk PM2.5 adds.
Source: thehindu.com
This story was synthesised by AI from the source linked above.