Hemodialysis Diet: Nutrition Guide for Dialysis Patients

What to Eat on Hemodialysis

• Adequate protein — higher target than pre-dialysis CKD: NKF KDOQI 2020 recommends 1.0-1.2g of protein per kilogram of body weight per day for hemodialysis patients — higher than the 0.8g/kg/day for pre-dialysis CKD. Dialysis removes protein-containing compounds and patients are at high malnutrition risk
• Low-potassium foods: green beans, cabbage, white rice, pasta, bread, apples, berries, grapes — select from lower-potassium options consistently between sessions
• Low-phosphorus proteins: egg whites, fresh chicken or fish (not processed) — animal phosphorus from whole foods is only 40-60% absorbed
• Dialysis-day foods: some patients benefit from eating their highest-potassium allowance on dialysis days when potassium is removed during the session

Protein on Hemodialysis — Why It's Different from Earlier CKD

Protein restriction that applies at CKD Stage 3-5 before dialysis REVERSES on hemodialysis — protein targets increase significantly once dialysis begins. Dialysis removes amino acids and the process itself is catabolic. Malnutrition is one of the strongest predictors of mortality in hemodialysis patients. NKF KDOQI 2020 recommends 1.0-1.2g/kg/day protein for HD patients. This is a critical distinction — patients who continue pre-dialysis protein restriction after starting HD face serious malnutrition risk.

What to Strictly Limit on Hemodialysis

• High-potassium foods: bananas, oranges, potatoes, avocados, tomatoes, coconut water — potassium accumulates between dialysis sessions and can cause fatal cardiac arrhythmias before the next session
• Phosphate additives: processed meats, dark colas, fast food — inorganic phosphorus from additives is 90-100% absorbed and directly causes bone disease and cardiovascular calcification in dialysis patients
• Fluid between sessions: excess fluid causes hypertension and pulmonary edema — your individual fluid allowance is set by your dialysis team based on residual urine output
• Salt substitutes: contain potassium chloride — extremely dangerous on hemodialysis where potassium accumulates between sessions
• Dairy in large amounts: high in phosphorus — limit to small controlled portions

Potassium on Hemodialysis — Why It's Strictly Limited

Potassium accumulates between hemodialysis sessions and can reach dangerous levels in the 2-3 days between treatments. Normal kidneys regulate potassium continuously. Hemodialysis removes potassium only during the session — in the 44-68 hours between sessions, every gram of dietary potassium accumulates. Serum potassium above 6.0 mEq/L before a dialysis session causes serious cardiac risk. This is why potassium restrictions are significantly tighter on HD than at earlier CKD stages.

Medications on Hemodialysis and Diet

Phosphate binders (Sevelamer, Calcium Carbonate, Calcium Acetate, Lanthanum) must be taken with the first bite of every meal and snack — not before or after. Timing is essential for binders to work. Skipping a binder at a meal allows full phosphorus absorption from that meal regardless of how well you restrict at other times. Most dialysis patients are also on Vitamin D analogues (Calcitriol) because kidneys can no longer activate Vitamin D — dietary Vitamin D intake still matters but activated supplemental forms are the primary treatment.