Renal failure, also called kidney failure, is a condition in which your kidneys, the paired organs that help keep your body clean and chemically balanced, lose their ability to function. Sudden renal failure may derive from injuries or disorders that interfere with blood clotting. Common causes of chronic renal failure include diabetes and high blood pressure, according to the University of Maryland Medical Center. When your kidneys are failing, certain aspects of a high-fiber diet may put your wellness in danger.
Function
Fiber is an indigestible form of carbohydrate that promotes digestive function, positive cholesterol levels and appetite control. Most Americans consume far less than the daily recommended 25 g of fiber per day for women and 38 g per day for men, according to DaVita, a provider of kidney care, dialysis services and education for renal disease patients in the United States. Maintaining appropriate fiber intake lowers your risk for digestive conditions, such as constipation, hemorrhoids and diverticulitis, and heart disease -- a leading cause of death in renal disease patients.
Challenges
As your kidneys fail, they lose their ability to balance nutrient levels in your body properly. To prevent serious complications, your doctor may recommend dietary restrictions. Dangerously high phosphorus levels, for example, can cause skin itching and calcium loss, according to the National Kidney Foundation. Excessive potassium levels can also pose danger. Unfortunately, limiting these and other nutrients, such as sodium, can make it difficult to meet your daily fiber needs. Many fiber-rich fruits and vegetables, including citrus fruits, bananas, potatoes and raisins, are also rich in potassium. Beans and lentils are high in both fiber and phosphorus. Numerous commercial breads, cereals and crackers are moderately high in sodium. Canned beans, soups and vegetables are sodium-rich.
Suitable Fiber Sources
You can meet your daily fiber needs and stay within kidney disease-diet restrictions. Fruits and vegetables that are relatively low in phosphorus, potassium and sodium include fresh apples, apricots, asparagus, beets, berries, broccoli, carrots, cauliflower, plums, green beans, pineapple, figs, eggplant, okra, lettuce, peaches and peas. For grains, DaVita recommends cooked grits, high-fiber white bread, unsalted popcorn and all-natural wheat and barley cereal. One serving, for most of these foods, is equal to 1/2 cup.
Helpful Hints
Following your doctor or dietitian-approved diet plan can help ensure that your fiber and nutrient needs are safely met. To increase your fiber intake, leave the peels on fruits, such as apples and peaches, and choose whole fruits and vegetables instead of juice. When possible, choose refined grain products, such as breads, cereals and pasta, that are enriched with fiber. Eat enough calories to support a healthy body weight and prevent the breakdown of body tissue. The UMMC recommends asking your doctor what your ideal weight should be and weighing yourself each morning.
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