While there is no particular diet for inflammatory arthritis, which comprises rheumatoid and psoriatic arthritis, Umbreen Hasan, M.D., a rheumatologist with Allina Health in Minneapolis, Minnesota, recommends maintaining as healthy a lifestyle as possible. "Aim to eat a diet with plenty of grain products, fruits, and vegetables and balance those with physical activity to maintain or improve your weight," she says. "'All things in moderation' is truly the key to a happy and sustainable life with arthritis."