It is well known that smoking and obesity are risk factors for developing rheumatoid arthritis, but what about their impact on response to treatment? A Canadian study of over 1,000 early RA patients presented at the EULAR conference found that obese patients were half as likely as non-obese patients to be in remission in the first three years of treatment, and smokers were two-thirds as likely to be in remission compared to nonsmokers.

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