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Phosphorus from food — including phosphate additives that are nearly 100% absorbed and the hidden driver of hyperphosphatemia.
Food phosphorus comes in two forms: natural (absorbed ~40-60%) and inorganic phosphate additives in processed foods (absorbed ~90-100%). In CKD stages 3b-5 and dialysis, dietary phosphorus targets are 800-1,000 mg/day. Natural high-phosphorus foods include nuts, seeds, cheese, and legumes; processed foods with 'phos' on the label (phosphoric acid, sodium phosphate) are the bigger trap. Phosphate binders taken with meals reduce absorption.
Blood phosphate above ~5.5 mg/dL - a CKD mineral-bone disorder driver that accelerates vascular calcification and bone disease.
A medication taken with meals that binds dietary phosphate in the gut so it is not absorbed - the cornerstone of phosphate control in advanced CKD.
The eating plan for dialysis patients - higher protein (1.2 g/kg/day) with tight potassium, phosphorus, sodium, and fluid control.
Bone disease caused by chronic kidney disease — abnormal bone turnover from calcium, phosphate, vitamin D, and PTH disturbances.
Potassium obtained from food and drink — the main modifiable driver of blood potassium levels in kidney disease.
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This content is a general reference, not medical advice, a diagnosis, or a treatment plan. Do not change your diet, fluids, medicines, or dialysis plan without your nephrologist or renal dietitian. Individual recommendations depend on your labs, medications, conditions, and care plan.