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Tofu, soft, prepared with calcium sulfate and magnesium chloride (nigari)

Per 100 g edible portion
Legumes & Nuts
Kidney-friendlyUsing CKD stage 3-4 limits, Tofu falls in the Kidney-friendly tier - Phosphorus (9%) is the most notable of the three, with low risk across the board.

Phosphorus / Sodium / Potassium (rating basis)

Phosphorus92 mg9%
Low
Sodium8 mg<1%
Low
Potassium120 mg6%
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 9% 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

Protein7.2 gNot part of rating
Fiber0.2 gBeneficial for CKD (core plant-based nutrient)
Sugar (total)0.7 gNatural sugar
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 & NutsKidney-friendly foodsHigh fiber foodsLow sodium foodsKidney-friendly Legumes & Nuts

Frequently asked questions

Is Tofu safe for kidney disease?

On a CKD stage 3-4 basis, Tofu is Kidney-friendly, with risk mainly coming from Phosphorus (9%). Data is for reference and is not medical advice.

Why is Tofu rated Kidney-friendly?

Simply put: among Tofu's three minerals, Phosphorus is highest (92 mg, 9%), and by the tier rule (<15%) the result is Kidney-friendly.

How much Phosphorus is in Tofu?

Data: 100 g of Tofu has Phosphorus 92 mg (9% 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 120 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 less Phosphorus at 92 mg per 100 g. Use your own daily limits, not category labels, as the guide.