Corn vs Zucchini: Which Is Better for Kidneys?

Q: Which has more phosphorus, corn or zucchini?

Per 100 g, corn contains 77 mg and zucchini contains 38 mg of phosphorus.

Q: Is corn or zucchini better for kidney disease?

Based on CKD stage 3-4 daily limits, corn is rated kidney-friendly and zucchini is rated kidney-friendly. Ratings reflect mineral load per 100 g only — individual advice should come from your healthcare team.

Q: What is the main difference for a CKD diet?

The largest difference is phosphorus: zucchini sits at 4% of the daily limit versus 8% for corn. See each food page for the full mineral profile.

Comparing Corn and Zucchini per 100 g: Corn rates Kidney-friendly, while Zucchini rates Kidney-friendly under CKD stage 3-4 daily limits. Zucchini carries the lighter mineral load overall, driven mainly by Phosphorus (4% vs 8% of the limit).

Corn
Kidney-friendly Zucchini
Kidney-friendly

Phosphorus

77 mg

38 mg

Sodium

1 mg

<1%

8 mg

<1%

Potassium

218 mg

11%

261 mg

13%

See Corn details See Zucchini details

Frequently asked questions

Which has more phosphorus, corn or zucchini?

Per 100 g, corn contains 77 mg and zucchini contains 38 mg of phosphorus.

Is corn or zucchini better for kidney disease?

Based on CKD stage 3-4 daily limits, corn is rated kidney-friendly and zucchini 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 phosphorus: zucchini sits at 4% of the daily limit versus 8% for corn. See each food page for the full mineral profile.