The Truth About Protein in a Kidney Disease Diet

January 20, 2025
Nutrition, CKD Diet, Protein

Protein intake is one of the most debated topics in CKD nutrition. Should you limit it? Increase it? Go plant-based? Here's what the science—and the nephrologists—say.

Stage-Based Guidelines

  • Stage 1–3a: Moderate protein (0.8 g/kg/day)
  • Stage 3b–4: Low protein diet (0.6–0.8 g/kg/day)
  • Stage 5 or Dialysis: Higher protein needed (1.0–1.2 g/kg/day)

Why Protein Needs Shift

As CKD advances, protein waste builds up—causing symptoms. But in dialysis, protein loss is high, so more is required.

Best Protein Sources

  • • Eggs, lean poultry, white fish
  • • Plant sources: tofu, legumes (check potassium levels)
  • • Specialized renal protein supplements if prescribed

Risks of Too Much Protein

High-protein diets can accelerate kidney decline. Also raises uremic toxins and GFR burden.

When to See a Dietitian

Get tailored recommendations by stage. Search dietitians by state.

References

• NKF Nutrition Guidelines

• International Society of Renal Nutrition and Metabolism

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Medical Disclaimer

This article is for informational purposes only and is not intended to replace professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.