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Tofu, dried-frozen (koyadofu)

Per 100 g edible portion
Legumes & Nuts
Higher riskUsing CKD stage 3-4 limits, Tofu falls in the Higher risk tier - Phosphorus (48%) is the main risk source.

Phosphorus / Sodium / Potassium (rating basis)

Phosphorus483 mg48%
High
Sodium6 mg<1%
Low
Potassium20 mg1%
Low

About this food

About Tofu: Legumes and nuts are typically high in both phosphorus and potassium, so they need care. Plant phosphorus absorbs at a lower rate (30-50%), so the real load is smaller than the numbers suggest. As a Legumes & Nuts item, its role in a kidney diet depends mainly on mineral content.

Nutrient insight

Tofu's phosphorus is 48% of the limit, from Natural plant source (lower absorption). On a phosphorus-restricted diet, limit how often and how much you eat it.

Other nutrients

Protein52.5 gNot rated; needs attention at stage 4-5
Fiber7.2 gBeneficial for CKD (core plant-based nutrient)
Alcohol0 gAlcohol-free
Purine78.5 mgModerate purineNot rated · category estimate
OxalateNo dataNot rated · reference for those with kidney stones
Phosphorus source: Natural plant source (lower absorption) · Potassium form: Whole food

Practical tips

A handy approach - Cook legumes and discard the water to lower some minerals; keep nuts to a small handful.

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Related guides

Legumes & NutsHigher risk foodsHigh fiber foodsLow phosphorus foods

Frequently asked questions

Is Tofu safe for kidney disease?

Based on CKD stage 3-4 daily limits, Tofu is rated Higher risk - Phosphorus is the highest contributor at 48% of its limit. Ratings reflect public nutrition data only; individual cases should follow medical advice.

Why is Tofu rated Higher risk?

Among phosphorus, sodium and potassium, Tofu's Phosphorus is highest (483 mg, 48% of daily limit), falling in the >30% band - hence the Higher risk rating.

How much Phosphorus is in Tofu?

Data: 100 g of Tofu has Phosphorus 483 mg (48% of the 1,000 mg limit).

Is Tofu safe on a low-potassium diet?

Low-potassium question: Tofu falls below the 300 mg threshold (Potassium 20 mg per 100 g). Whether it fits depends on your daily potassium budget.

How does Tofu compare to other legumes & nuts foods?

Next to other Legumes & Nuts options, Tofu carries more Phosphorus at 483 mg per 100 g. Use your own daily limits, not category labels, as the guide.