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Natto

Per 100 g edible portion
Legumes & Nuts
Higher riskNatto receives a Higher risk rating. Potassium (36%) clearly exceeds the safe band - restrict or follow medical advice.

Phosphorus / Sodium / Potassium (rating basis)

Phosphorus174 mg17%
Moderate
Sodium7 mg<1%
Low
Potassium729 mg36%
High

About this food

In a CKD diet, Legumes & Nuts deserve attention: Natto - 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.

Nutrient insight

Potassium is the highest of the three at 36%. With reduced kidney function, blood potassium can rise, so spread high-potassium foods across the day rather than in one large serving.

Other nutrients

Protein19.4 gNot rated; needs attention at stage 4-5
Fiber5.4 gBeneficial for CKD (core plant-based nutrient)
Sugar (total)4.9 gNatural sugar
Alcohol0 gAlcohol-free
Purine113.9 mgModerate purineNot rated · exact match
OxalateNo dataNot rated · reference for those with kidney stones
Phosphorus source: Natural plant source (lower absorption) · Potassium form: Whole food

Practical tips

How to eat it more safely: Cook legumes and discard the water to lower some minerals; keep nuts to a small handful.

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Frequently asked questions

Is Natto safe for kidney disease?

On a CKD stage 3-4 basis, Natto is Higher risk, with risk mainly coming from Potassium (36%). Data is for reference and is not medical advice.

Why is Natto rated Higher risk?

Simply put: among Natto's three minerals, Potassium is highest (729 mg, 36%), and by the tier rule (>30%) the result is Higher risk.

How much Potassium is in Natto?

In every 100 g of Natto, Potassium is about 729 mg - roughly 36% of the daily limit (2,000 mg).

Is Natto safe on a low-potassium diet?

For people watching potassium, Natto exceeds 300 mg per 100 g, with Potassium at 729 mg. Confirm your personal limit with your nephrologist or renal dietitian.

How does Natto compare to other legumes & nuts foods?

Against the Legumes & Nuts average, Natto shows more Potassium (729 mg per 100 g). The tier shown here comes from its own numbers, not the category.