Kidney‑Protective Dietary Recommendations for Chronic Kidney Disease

Protein Management

The 2024 KDIGO guideline recommends that adults with CKD stages 3–5 limit protein intake to 0.8 g per kilogram of body weight per day to balance kidney protection with nutritional adequacy. 1
KDIGO advises avoiding protein intakes exceeding 1.3 g/kg/day, as higher amounts accelerate CKD progression. 1
For patients at high risk of kidney failure who are willing and able, KDIGO suggests a very low‑protein diet (0.3–0.4 g/kg/day) supplemented with essential amino acids or keto‑acid analogues, achieving a total protein equivalent of 0.55–0.6 g/kg/day under close supervision. 1
KDIGO cautions against protein restriction in metabolically unstable individuals because of the risk of malnutrition. 1
In older adults with frailty or sarcopenia, KDIGO notes that higher protein targets may be required to preserve muscle mass. 1
The 2026 KDOQI guideline provides Grade 1A evidence that protein restriction, with or without keto‑analogues, reduces the risk of end‑stage kidney disease or death. 2

KDIGO recommends limiting sodium intake to less than 2 g per day (≈ 90 mmol or 5 g NaCl) for most individuals with CKD; patients with sodium‑wasting nephropathy need individualized adjustments. 1

KDIGO emphasizes that collaboration with a renal dietitian or accredited nutrition professional is essential to tailor sodium, phosphorus, potassium, and protein recommendations to each patient’s CKD severity and comorbidities. 1
The 2026 KDOQI guideline states that professional guidance is critical for successful implementation and ongoing monitoring of kidney‑protective diets. 2
When a very low‑protein diet with keto‑analogue supplementation is used, KDOQI requires regular clinical supervision, including assessment of:

KDIGO advises not to restrict protein in children with CKD, as inadequate protein can impair growth; protein and energy intake should be set at the upper end of normal ranges. 1
For patients with diabetic CKD, the 2026 KDOQI guideline recommends a moderately lower protein intake of 0.6–0.8 g/kg/day to maintain nutritional status while supporting glycemic control. 2