Kale vs Zucchini: Which Is Better for Kidneys?

Q: Which has more potassium, kale or zucchini?

Per 100 g, kale contains 348 mg and zucchini contains 222 mg of potassium.

Q: Is kale or zucchini better for kidney disease?

Based on CKD stage 3-4 daily limits, kale is rated moderate 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 potassium: zucchini sits at 11% of the daily limit versus 17% for kale. See each food page for the full mineral profile.

For a kidney-friendly diet the question is mineral load: Kale is Moderate, Zucchini is Kidney-friendly. If you are choosing between them, Zucchini leaves more room in the daily allowance — the Potassium gap is 11% versus 17%.

Kale
Moderate Zucchini
Kidney-friendly

Phosphorus

55 mg

32 mg

Sodium

53 mg

2 mg

<1%

Potassium

348 mg

17%

222 mg

11%

See Kale details See Zucchini details

Frequently asked questions

Which has more potassium, kale or zucchini?

Per 100 g, kale contains 348 mg and zucchini contains 222 mg of potassium.

Is kale or zucchini better for kidney disease?

Based on CKD stage 3-4 daily limits, kale is rated moderate 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 potassium: zucchini sits at 11% of the daily limit versus 17% for kale. See each food page for the full mineral profile.