1 for damaged kidneys, so you'll need to learn what foods are low in phosphorous. Most homemade diet recipes
will be high on fatty meats (fat contains less phosphorous than lean meat), and carbohydrates like rice. Egg whites, boiled dark chicken meat with the skin, fatty ground beef, pork and lamb will work too. When cooking the ground meats, don't overcook as that makes more phosphorous available.
Next, you'll need to add calcium (Tums) and/ or aluminum hydroxide (antacid) to the diet.