Study: Bigger babies, bigger risk?

Those big 10-pound newborns that look like future Hall of Famers might be at an increased risk of rheumatoid arthritis. In a study of 84,077 women participating in the Nurses' Health Study from 1976 to 1992, researchers found that people who weighed more than 10 pounds at birth were twice as likely to develop rheumatoid arthritis as those who were of normal weight at birth.

This is not to say that heavier birth weight causes rheumatoid arthritis, researchers say. Both might have the same underlying cause.

The results appeared in the Annals of the Rheumatic Diseases.

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