If you have had acute renal failure (ARF) and your kidneys have not recovered fully, you may need to follow a special diet that keeps your kidneys from having to work too hard. A dietitian will work with you to plan a diet that best fits your needs.

Depending on the extent of your kidney damage, other diseases you may have, and whether you are receiving dialysis, you may need to control your intake of minerals (electrolytes) and fluids. You may also have to limit how much protein you eat. In general, you may need to:

• Limit your salt intake. Eating too much salt (sodium) can cause you to retain water and increases your risk of heart failure, pulmonary edema, and high blood pressure. It can be hard to avoid sodium. To reduce the amount of salt in your diet, learn to look for hidden sodium in foods and choose fewer processed foods.
• Watch your potassium intake. Potassium is found in salt substitutes, potassium supplements, and some fruits and vegetables. Too much potassium in your bloodstream (hyperkalemia) can cause muscle weakness and irregular heart rhythms.
• Watch your phosphorus intake. Phosphorus is found in milk, cheese, meat, chicken, and fish. Too much phosphorus in your blood (hyperphosphatemia) can cause calcium to be pulled from your bones, leading to bone problems.

Being on dialysis creates some very special needs. It is important to eat the right number of calories and nutrients to stay as healthy as you can. A nutritionist or dietitian can help you design an appropriate meal plan.

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