[Current nutrition recommendations for chronic kidney disease]

Area of Science:

• Nephrology
• Nutritional Science
• Internal Medicine

Background:

• Chronic kidney disease (CKD) management requires careful attention to nutritional status.
• Current recommendations for nutrient supply in CKD patients are evolving.
• Optimizing diet is crucial for slowing disease progression and improving patient outcomes.

Purpose of the Study:

• To review and present current recommendations for individual nutrient supply in patients with chronic kidney disease.
• To highlight areas of controversy and ongoing research, such as protein restriction.
• To discuss the potential benefits of specific dietary approaches like vegetarian diets.

Main Methods:

• Literature review of current guidelines and expert opinions on CKD nutrition.
• Analysis of recommended intake ranges for energy, macronutrients, and micronutrients.
• Discussion of evidence regarding controversial topics like protein and vegetarian diets.

Main Results:

• Specific recommendations provided for energy (25-35 kcal/kg/day), phosphorus (<1 g/day), and sodium (<2.3 g/day).
• Potassium restriction advised for eGFR <30 ml/min/1.73 m2 (serum <5 mmol/L).
• Protein restriction debated; vegetarian diets show promise, alongside emphasis on trace elements and antioxidants.

Conclusions:

• Adherence to established nutrient guidelines is essential for CKD management.
• Further research is needed to clarify optimal protein intake and the role of vegetarian diets.
• Adequate intake of trace elements and antioxidants is important for overall health in CKD patients.