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Potassium in CKD

The kidneys regulate the concentration of potassium in the blood and eliminate it when levels are too high. When kidney function is impaired, potassium may build up in the blood and cause heart problems.

Therefore, CKD patients may need to limit dietary potassium intake. Blood potassium levels should be checked regularly.

Useful tips for reducing potassium

  • Choose foods with lower potassium content
  • Vary food choices
  • Avoid hidden sources of potassium such as salt substitutes, supplement, and food additives with potassium

Cooking tips for reducing potassium in food

Washing

  • Cut fruits and vegetables into smaller pieces before washing
  • Wash in plenty of water
  • Let some foods soak in a large bowl of water for a few hours (e.g. potatoes or spinach).

Cooking

  • Peel off the skin when possible (potatoes, carrots, etc.)
  • Do not cook items whole - cut them into small pieces.
  • Cook in plenty of water
  • Change the water during cooking
  • Squeeze the food after cooking to eliminate water

Manipulations

  • Cut fruit into small pieces and prepare in advance.
  • Homemade fruit juices and smoothies may contain less potassium than fresh fruit. Do not use the liquid.
  • When eating fruit in syrup, do not consume the liquid.
  • Defrost frozen vegetables at room temperature before cooking.
  • Avoid vegetables that are prepared in oil or vinegar, brined, or boiled in cans. Vegetable juices may contain less potassium.

Foods high in potassium

Use caution when consuming these foods that may be high in potassium:

  • Ketchup, soy sauce, peanut sauce
  • Chocolate, chocolate cookies and cakes, hazelnut spreads, bars
  • Walnuts, almonds, olives, pine nuts
  • Dried fruits such as raisins, plums, chestnuts
  • Sweets and biscuits with almonds, pine nuts, raisins
  • Potatoes and potato chips
  • Apricots, bananas, cherries, kiwis, melon, peaches, chestnuts
  • Tomato products
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