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Salmon

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Salmon is rich in heart-healthy omega-3 fatty acids and these same compounds may also help reduce pain-promoting inflammation. That makes it a win-win for people with rheumatoid arthritis, who have greater risk of heart trouble than people without RA.

Studies have suggested that the omega-3 fatty acids found in fish oil may protect against developing rheumatoid arthritis and could mitigate the severity of the disease. "If you have rheumatoid arthritis, it would not hurt to consume these,” says Hyon Choi, MD, DrPH, professor of medicine at Boston University School of Medicine. Tuna, mackerel and sardines are also excellent sources of omega-3.

Next: Olive oil