Potassium and Kidney Disease
Why potassium levels matter in kidney disease and which foods are high or low.
Last updated: 2026-09-24
Potassium keeps the heart and muscles working. Failing kidneys may not remove enough, letting levels rise dangerously.
High-potassium foods
- Bananas, coconut water, oranges
- Potatoes, tomatoes, spinach
- Dals and nuts in quantity
Frequently asked questions
Is coconut water bad for kidney patients?
It is very high in potassium and usually avoided when potassium is elevated.