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
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.