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Sugary drinks

Worst

There's really no clear evidence that sugary drinks are good or bad for chronic pain. However, they tend to be low in nutrients and relatively high in calories, and may be a contributor to the obesity epidemic.

In general, being overweight or obese can increase your risk of developing rheumatoid arthritis by 24%, according to a recent study authored by Dr. Matteson. Carrying around extra weight also puts unnecessary stress on already beleaguered joints.

So it might be best to avoid them as part of your healthy-eating plan.

Next: Yogurt