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Sodium from salt and processed foods — the main driver of fluid retention and blood pressure in kidney disease.
Sodium drives thirst, fluid retention, hypertension, and proteinuria in CKD. Renal guidelines recommend under 2,000-2,300 mg/day (about 5 g salt). Roughly 70% of dietary sodium comes from processed and restaurant food, not the salt shaker. High-sodium foods include pickles, cured meats, canned soups, and packaged snacks. Dialysis patients also restrict fluids, making sodium control doubly important.
Excess extracellular fluid volume in kidney patients from inadequate excretion, causing edema, hypertension, pulmonary congestion, and increased cardiovascular risk.
Persistently elevated blood pressure - the second leading cause of kidney failure and a driver of CKD progression at every stage.
The eating plan for dialysis patients - higher protein (1.2 g/kg/day) with tight potassium, phosphorus, sodium, and fluid control.
The weight gained between dialysis sessions from fluid and salt intake - kept below ~3% of dry weight to protect the heart.
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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.