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Science News for October 25, 2008


Rheumatoid arthritis rising among women

Rheumatoid arthritis incidence and prevalence are on the rise among women in the US, with a 54% increase in female cases from 36 to 54 per 100,000 annually, according to a Mayo Clinic study. Researchers believe an environmental factor may be contributing to this trend, which could indicate a need for further research.