Although there is no official diet for rheumatoid arthritis, there are certain foods, such as Mediterranean-style foods including fish and colorful produce that can help reduce symptoms of the condition, according to WebMD. Whole grains and olive oil are also beneficial for those with rheumatoid arthritis.
There are some fats, such as omega-3 fatty acids, which help to lower the inflammation that occurs with rheumatoid arthritis, explains WebMD. The American Heart Association recommends eating a 3-ounce serving of fish twice a week, and the best types of fish include herring, salmon, anchovies and sardines. Canola oil, walnuts and soybeans also contain omega-3 fatty acids.
People with rheumatoid arthritis also may benefit from eating colorful fruits and vegetables, such as blueberries, watermelon, spinach and onions, claims WebMD. The chemicals in the fruits and vegetables that give them the bright color are antioxidants, and these help to keep inflammation under control. Adding whole grains to a diet may also help to lower the inflammation of rheumatoid arthritis by lowering the levels of C-reactive protein, which causes inflammation.
Olive oil is also beneficial for those who have rheumatoid arthritis thanks to a natural chemical that stops the production of inflammation-causing chemicals, states WebMD. The chemicals in olive oil work similarly to nonsteroidal anti-inflammatory drugs such as ibuprofen and aspirin.