Nutrition for Early Chronic Kidney Disease in Adults
Your kidneys do many things to keep you healthy. They filter wastes and extra water from your blood. To keep the body working properly, the kidneys balance the salts and minerals-such as calcium, phosphorus, sodium, and potassium-that circulate in your blood. The kidneys also release hormones that help make red blood cells and keep bones strong.
If your kidneys abruptly shut down because of an accident, poisoning, or other sudden sickness affecting the kidneys, you would quickly experience nausea and swelling from the buildup of wastes and fluid in your body. You would need to be hospitalized immediately to treat the effects of kidney failure.
When you have chronic kidney disease (CKD), however, you may not notice changes in your health. In CKD, the kidneys continue to work, they just don't do their job as well as they should. Wastes may build up so gradually that your body even becomes used to the condition. Salts containing phosphorus and potassium may rise to unsafe levels, causing heart and bone problems. You may be low in red blood cells, a condition called anemia, causing you to tire easily.
Millions of Americans are at risk of developing CKD because they have diabetes, high blood pressure, or both. High levels of blood glucose (sugar) put people who have diabetes at risk for heart disease, stroke, amputation, and eye and kidney problems. People with high blood pressure are at risk for damaged blood vessels, including the tiny vessels in the kidneys.
Whether you have type 1 or type 2 diabetes, what you eat affects your blood glucose, the body's main source of energy. Following a meal plan to keep your blood glucose at a healthy level may prevent CKD from developing.
Talk with your health care provider about your blood glucose targets and ask how often to check your blood glucose level. The results from your blood glucose checks will tell you if your diabetes care plan is working. Also ask your doctor for an A1C test at least twice a year. The A1C number reflects your average blood glucose for the past 3 months.
Following regular habits can help keep your blood glucose at a healthy level.
- Eat about the same amount of food each day.
- Eat your meals and snacks at about the same times each day.
- Do not skip meals or snacks.
- Take your medicines at the same times each day.
- Participate in physical activity every day.
Blood pressure is expressed as two numbers. The top number represents the force of your blood pushing against the artery walls when your heart beats. The lower number represents the pressure between beats. Normal blood pressure is less than 120/80 mmHg. It is recommended that people with kidney disease keep their blood pressure below 130/80 mmHg.
As blood pressure rises, the risk of damage to arteries, heart, brain, and kidneys increases. Controlling blood pressure through healthy food choices and regular physical activity can delay or prevent the development of chronic kidney disease.
The National Heart, Lung, and Blood Institute (NHLBI) supported research that compared a typical American diet with an eating plan that is lower in saturated fat, cholesterol, and total fat and that emphasizes fruits, vegetables, and lowfat dairy foods. People who followed the lowfat plan were able to reduce their blood pressure much more effectively than those who ate a typical diet. This eating plan-known as the DASH eating plan-also includes whole grain products, fish, poultry, and nuts. Limiting sodium (salt) is another important feature of the DASH eating plan.
Keep Track of Test Results
If you have CKD, your doctor will order regular blood tests. Ask your doctor for copies of your laboratory reports and ask to have them explained. Note any results that are out of the normal range. Talk with your doctor or your dietitian about what you can do to make healthier food choices. When you learn how to read your reports, you will see how the foods you eat affect your kidneys. Remember that you are the most important member of your health care team.
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