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Broccoli and other veggies

Best

And it's not just broccoli—a vegetable-rich diet in general may be helpful. One study found that people who regularly ate cooked vegetables had a 61% decreased risk of developing rheumatoid arthritis compared to those who didn't.

Other research has found that vegetarian diets may help with swollen joints and joint pain. "Vegetables in general have been associated with a protective effect on the development of rheumatoid arthritis," says Dr. Choi.

Next: Cherries