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Broccoli vs Onion: Which Is Better for Kidneys?

For a kidney-friendly diet the question is mineral load: Broccoli is Moderate, Onion is Kidney-friendly. On the three rated minerals, the widest separation is Potassium: 7% of the limit for Onion against 16% for Broccoli.

Broccoli
Moderate Onion
Kidney-friendly
Phosphorus
66 mg
7%
29 mg
3%
Sodium
33 mg
2%
4 mg
<1%
Potassium
316 mg
16%
146 mg
7%

About Broccoli

Broccoli sits in the Vegetables group. Vegetables are a key source of fiber and vitamins and are beneficial in CKD. Some are high in potassium, but slicing, boiling and discarding the water can remove about 30-50% of the potassium - a practical step.

About Onion

Onion belongs to the Vegetables category. Vegetables are a key source of fiber and vitamins and are beneficial in CKD. Some are high in potassium, but slicing, boiling and discarding the water can remove about 30-50% of the potassium - a practical step.

Practical tips

Practical tip: Slice, boil and discard the water to remove roughly 30-50% of the potassium - a practical method for high-potassium vegetables. A common practice is: Slice, boil and discard the water to remove roughly 30-50% of the potassium - a practical method for high-potassium vegetables.

See Broccoli details See Onion details

Frequently asked questions

Which has more potassium, broccoli or onion?

For Potassium, the per-100 g values are 316 mg in Broccoli and 146 mg in Onion — the rest of the mineral profile is on each food page.

Is broccoli or onion better for kidney disease?

Under the daily limits used on this site, Broccoli falls in the Moderate tier and Onion in the Kidney-friendly tier. Lower tiers mean a smaller share of the daily allowance per 100 g.

What is the difference between broccoli and onion for a CKD diet?

For a CKD diet, the key gap is Potassium — 7% of the limit for Onion and 16% for Broccoli. Check each food page for phosphorus, sodium and potassium together.