diet in renal disease
Last edited 09/2021
The renal diet is:
- low in phosphate (6.5 mg/kg/day)
- low in potassium (0.6 g/kg/day)
- low in protein
- high in fibre
- low in water soluble vitamins and so careful supplementation is indicated
A meta-analysis of published randomised controlled trials has revealed that 'dietary protein restriction reduces the risk of renal failure or death in nondiabetic renal disease and improves nephropathy in insulin-dependent diabetes mellitus' (1).
A systematic review found that (2):
- reducing protein intake in patients with chronic kidney disease reduces the occurrence of renal death by 31% as compared with higher or unrestricted protein intake
- optimal level of protein intake cannot be confirmed from the studies examined
NICE however state (3):
- Do not offer low-protein diets (dietary protein intake less than 0.6-0.8 g/kg/day) to people with CKD
- Fouque D. Meta-analysis: dietary protein restriction delays progression in renal disease. EBM 1 (5), 147.
- Fouque D et al. Low protein diets for chronic kidney disease in non diabetic adults. Cochrane Database Syst Rev. 2006 Apr 19;(2):CD001892.
- NICE (August 2021). Chronic kidney disease: assessment and management