How can you balance conflicting dietary advice for diabetes and kidney disease?
If you have both diabetes and kidney disease, it may often seem that the diet advice you receive for one of them contradicts the advice you receive for the other. For example, for diabetes you are advised to choose whole grains more often, but the kidney diet recommends white bread. Whole grains are higher in potassium and phosphorus, which means you should choose white bread to replace the amount of whole grain bread recommended in your diabetes diet. Ultimately, it is the total amount of carbohydrates that matters most in managing blood sugar, regardless of the type of carbohydrate. It may be challenging but with careful planning, you can follow your kidney diet and still manage your blood sugar.
What are the foods that you need to careful of with kidney disease?
Some foods that you can eat in unlimited amounts when only managing diabetes need to be restricted on a kidney diet because they are high in potassium. These include foods like broccoli, spinach and brussels sprouts. There are, however, some tricks to help reduce the amount of potassium in some of your favourite vegetables, such as potatoes. Soak the vegetable in a pot with a large amount of water for at least 6 hours or overnight, then rinse with fresh water and drain. Use fresh water for cooking. Even if you choose low-potassium foods, but eat large portions, you may still be consuming too much potassium; knowing the recommended portion amount is very important. Having potassium levels that are too high can be dangerous for your heart. Your dietitian can help you identify which foods contain potassium, so you can make the best choices for you.
People with kidney disease are often advised to reduce phosphorus in their diet. Although you may be taking phosphate binders as prescribed by your kidney doctor, you will need to reduce how much phosphorus you get from your food. Your dietitian can advise you how many servings of dairy products to include in your meal plan. You will also want to read ingredient lists and avoid phosphate additives, such as sodium phosphate and phosphoric acid, which are found in processed foods.
Your kidneys are responsible for managing the amount of sodium in your body. Eating too much sodium (salt) can increase your blood pressure and cause water retention, putting stress on your heart and kidneys and making them work harder. Most of the salt we eat comes from processed foods. Read labels carefully and choose foods with less than 5% daily value for sodium. It also helps to cook with little or no salt and to remove the salt shaker from the table.
For diabetes, the nutrient of most concern is carbohydrate. Protein gets less attention because it has little impact on blood sugar; however, with kidney disease, the amount of protein your body needs depends on the level of your kidney function as well as how the kidney disease is being treated. Your healthcare team can help you figure out whether you require more protein or less protein in your diet.
