Uncontrolled or poorly controlled high blood pressure is the second leading cause of chronic kidney failure in the US, accounting for about 30 percent of all cases. (Diabetes is the leading cause.) If you have developed kidney disease, there are ways to change your eating habits that will help preserve kidney function. Since March is National Kidney Month, this is a good time to review this information.

A special diet for people with kidney disease helps to control the buildup of waste products and fluid in your blood and to decrease the workload of your kidneys. You may meet with a dietitian, or a specialist renal dietitian, to develop an eating plan that is right for you. These plans usually control the amount of protein and phosphorus you eat.

Here are some tips for healthy eating for people with kidney disease:

• Limit the amount of protein in your daily diet. When your body processes protein, it creates a waste product called urea, which the kidneys then eliminate. Weakened kidneys may have trouble getting rid of urea, so you can avoid its buildup by reducing the amount of protein you eat.

• Eat fewer foods that are high in phosphorus; these include dairy products such as milk, cheese, pudding, yogurt and ice cream; dried beans and peas; nuts and peanut butter; and beverages such as cocoa, beer and colas. Your kidneys may not be able to remove phosphorus from your blood, which can lead to calcium loss and weakening of the bones.

• Keep your sodium intake low. When it comes to salt, the same recommendations apply as for high blood pressure.

Related information: Basic facts - Disease risks | Lifestyle changes - Eating well

Sources:

• National Kidney Foundation. Nutrition and chronic kidney disease.
• National Kidney Foundation. About kidney disease.