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Onions, spring or scallions (includes tops and bulb), raw

Per 100 g edible portion
Vegetables
Kidney-friendlyMeasured against KDIGO/KDOQI daily limits, Onions is Kidney-friendly: even its highest mineral, Potassium, reaches only 14% of the limit.

Phosphorus / Sodium / Potassium (rating basis)

Phosphorus37 mg4%
Low
Sodium16 mg<1%
Low
Potassium276 mg14%
Low

About this food

Onions is a common member of Vegetables. 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. This helps when choosing similar foods.

Nutrient insight

Potassium is the highest of the three at 14%. With reduced kidney function, blood potassium can rise, so spread high-potassium foods across the day rather than in one large serving.

Other nutrients

Protein1.8 gNot part of rating
Fiber2.6 gBeneficial for CKD (core plant-based nutrient)
Sugar (total)2.3 gNatural sugar
Alcohol0 gAlcohol-free
Purine2.2 mgLow purineNot rated · category estimate
Oxalate27 mgLow oxalateNot rated · category estimate
Phosphorus source: Natural plant source (lower absorption) · Potassium form: Whole food

Practical tips

How to eat it more safely: Slice, boil and discard the water to remove roughly 30-50% of the potassium - a practical method for high-potassium vegetables.

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Frequently asked questions

Is Onions safe for kidney disease?

Onions scores Kidney-friendly on the phosphorus/sodium/potassium assessment, led by Potassium (14% of limit). This site presents data, not medical judgment.

Why is Onions rated Kidney-friendly?

The reason: Potassium (276 mg, 14%) is the most prominent of Onions's three minerals, at the <15% level, which maps to Kidney-friendly.

How much Potassium is in Onions?

In every 100 g of Onions, Potassium is about 276 mg - roughly 14% of the daily limit (2,000 mg).

Is Onions safe on a low-potassium diet?

For people watching potassium, Onions falls below 300 mg per 100 g, with Potassium at 276 mg. Confirm your personal limit with your nephrologist or renal dietitian.

How does Onions compare to other vegetables foods?

Against the Vegetables average, Onions shows less Potassium (276 mg per 100 g). The tier shown here comes from its own numbers, not the category.