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Rye flour, dark

Per 100 g edible portion
Grains & Starches
Higher riskFrom a daily-limit view, Rye flour lands in the Higher risk band: Phosphorus is 50% - clearly high, handle with care.

Phosphorus / Sodium / Potassium (rating basis)

Phosphorus499 mg50%
High
Sodium2 mg<1%
Low
Potassium717 mg36%
High

About this food

For Grains & Starches, Rye flour is a typical example. Grains and starches are usually relatively low in potassium and phosphorus, making them a sensible base for a CKD diet. Watch whole-grain and some processed grain products, which can carry more phosphorus.

Nutrient insight

Rye flour's phosphorus is the top contributor (50% of its limit). Source matters: animal phosphorus absorbs at 60-80%, additive phosphorus near 100% - the same number can mean very different real loads.

Other nutrients

Protein15.9 gNot rated; needs attention at stage 4-5
Fiber23.8 gBeneficial for CKD (core plant-based nutrient)
Sugar (total)2.3 gNatural sugar
Alcohol0 gAlcohol-free
Purine5 mgLow 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

Practical tip: Use refined grains as the base and treat whole grains by portion, since they carry more phosphorus.

Related foods

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Related guides

Grains & StarchesHigher risk foodsLow potassium foodsLow phosphorus foods

Frequently asked questions

Is Rye flour safe for kidney disease?

By our rating standard (CKD stage 3-4), Rye flour is Higher risk. Main consideration: Phosphorus at 50% of the daily limit. Data is for reference; consult your care team.

Why is Rye flour rated Higher risk?

Rye flour is rated Higher risk because Phosphorus is 50% of its limit (499 mg) - the only mineral reaching the >30% range.

How much Phosphorus is in Rye flour?

Per 100 g, Rye flour contains Phosphorus 499 mg, which is 50% of the CKD stage 3-4 daily limit (1,000 mg).

Is Rye flour safe on a low-potassium diet?

On a low-potassium diet, Rye flour exceeds the 300 mg per 100 g reference point, providing 717 mg of Potassium. Treat this as a reference - your stage and labs decide the real target.

How does Rye flour compare to other grains & starches foods?

Compared with the typical Grains & Starches food, Rye flour has more Phosphorus - 499 mg per 100 g on record. Ratings on this site always use the food's own measured values.