Anywhere from 33 percent to 75 percent of people with rheumatoid arthritis (RA) feel that there are some foods that make symptoms, such as stiff and painful joints, better or worse.
However, the scientific evidence is spotty.
"There's no compelling data that generalizes all patients," says Nortin M. Hadler, MD, professor of medicine and microbiology-immunology at the University of North Carolina at Chapel Hill and author of Worried Sick.
"There are multiple trials, but the effects are minimal." Even if some foods do alleviate RA symptoms, it would be hard to sort out individual diet factors, Dr. Hadler adds.
That said, here are six dietary changes that may be worth trying if you have rheumatoid arthritis.