Renal Diet Needs

According to information from the government website MedlinePlus, a renal diet is often prescribed for impaired kidney function. The crux of a renal diet is avoidance of foods that tend to overstress or overwork the kidneys. This provides these vital waste-disposal organs a bit of "time off" to prevent or slow their deterioration. Although a renal diet does not cure kidney disease, it can help to extend the functioning of the kidneys, improving the quality of life for the patient.

Sodium Limiting

• Limit sodium to less than 2,000 mg per day to reduce strain on the kidneys. The easiest way is to wholly eliminate your use of table salt and to avoid any foods that tend to have added sodium, such as canned soups and vegetables. Choose fresh foods whenever possible, along with low-sodium versions of your favorite items such as pretzels and potato chips. If you must use canned food, wash the contents well to remove as much sodium as possible.

Protein Reduction

• Limit your overall protein intake to about 40 to 60 grams a day to reduce the work that must be performed by the kidneys. According to Medline Plus, the recommended amount of protein intake per day is 0.6g per kilogram of body weight, which works out to 54g for a 200-pound individual. Limit your intake of high-protein foods such as meats and dairy products, and count the grams of protein in other foods to avoid inadvertently eating too much.

Nutrient Limitation

• Limit phosphorous and potassium to complete the needs of a renal diet. Foods to eliminate from your diet include nuts and nut butters, liver, dairy, soft candy, beer, bananas, chocolate, broccoli, potatoes, oranges, coffee, apricots, raisins, and mushrooms. There is no need to "count" the amount of phosphorous and potassium you consume, as avoiding these foods will sufficiently limit your intake.