Kidney-friendly vegetables include red bell peppers, cabbage, cauliflower, onions and garlic, notes DaVita. Good fruits to eat include apples, cranberries, berries, red cherries and red grapes. Egg whites are also a good source of protein for people with kidney problems, and they can be eaten as omelettes and egg white sandwiches, or added to tuna and garden salads.
People with kidney problems need to limit the amount of sodium in their diets, adds the American Kidney Fund. Too much sodium can lead to swelling and increases in blood pressure, which are damaging to the kidneys. It recommends that people who are accustomed to adding salt to their food when cooking or eating try replacing it with fresh herbs, lemon juice or salt-free spices. It is also important to limit high-sodium condiments such as BBQ sauce, soy sauce and ketchup. Eating fresh or frozen vegetables instead of canned vegetables is important because canned vegetables are typically high in sodium.
People with kidney problems should also avoid foods that are high in potassium, so the American Kidney Fund suggests that they remove bananas, avocados, oranges, spinach, potatoes, tomatoes and beans from their diet. They can replace these foods with white rice, squash, lettuce, pineapples, white bread, tortillas, beef and chicken.