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Beetroot juice genuinely lowers blood pressure (nitrate effect) — a real CKD benefit in moderation. But beetroot is high in oxalate and potassium, so for stone formers and advanced CKD it's a caution: limit portions and don't drink concentrated juice regularly.
Beetroot's nitrates convert to nitric oxide, lowering blood pressure — several trials show 4-8 mmHg systolic drops. That mechanism is genuinely relevant to kidney protection, since blood pressure drives CKD progression.
The other side: beetroot is high in oxalate (200-700 mg/100g — a stone risk for calcium-oxalate formers) and moderate-high in potassium (~325 mg/100g). Concentrated beetroot juice packs both into a small volume.
Practical rule: occasional roasted beet portions are fine for most; stone formers should limit beets and pair with dairy; advanced CKD/dialysis should keep portions small and count potassium. Beeturia (red urine/pink stools after beets) is harmless but often alarms people.
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