For a kidney-friendly diet the question is mineral load: Potato is Moderate, Corn is Kidney-friendly. The biggest gap is Potassium — Corn sits at 6% of the daily limit versus 21% for Potato.
Which has more potassium, potato or corn?
Per 100 g, potato contains 425 mg and corn contains 116 mg of potassium.
Is potato or corn better for kidney disease?
Based on CKD stage 3-4 daily limits, potato is rated moderate and corn is rated kidney-friendly. Ratings reflect mineral load per 100 g only — individual advice should come from your healthcare team.
What is the main difference for a CKD diet?
The largest difference is potassium: corn sits at 6% of the daily limit versus 21% for potato. See each food page for the full mineral profile.