Watermelon and CKD: Potassium, Phosphorus & Sodium Reference
Short answer: Watermelon is rated Kidney-friendly for CKD stage 3-4. Based on CKD stage 3-4 daily limits, Watermelon is rated Kidney-friendly - Potassium is the highest at 6% of its limit, still well below 15%.
About Watermelon
Watermelon belongs to the Fruits category. Potassium levels vary widely across fruits - apples and berries are low-potassium, kidney-friendly picks, while bananas and avocados are high and need portion control. The natural sugar in fruit is usually not the issue; potassium is.
Nutrient insight
The most striking number here is potassium (6%). For patients on potassium restriction, portion size and leaching are the two levers that matter for foods like Watermelon.
Phosphorus / Sodium / Potassium per 100 g
Practical tips
A handy approach - For high-potassium fruits, portion control is the main lever - for example, half a banana instead of a whole one.
See the full Watermelon food page →