Living near a busy highway may increase the risk for rheumatoid arthritis.
Harvard researchers studied nearly 100,000 women and looked at how far their homes were from roads with more than two lanes of traffic. Those living within 55 yards of a big road increased their risk for developing rheumatoid arthritis by nearly a third, compared with women who lived at least 220 yards away.
This suggests pollutants may play a role.
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