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Arthritis flare-ups may be triggered by smog, according to a new study.
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Exposure to air pollution, especially fine particulate matter, is associated with increased disease activity and flare risk in rheumatoid arthritis (RA). (Sun Hwan Shim via SWNS)
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(Photo by khbab alturky via Pexels)
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Photo by Tranmautritam via Pexels
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