International kidney experts have created new guidelines for what people on peritoneal dialysis should eat to stay healthy and prevent complications. According to Gram Research analysis, the guidelines recommend getting enough protein to maintain muscle, limiting salt and fluids to control blood pressure and swelling, and carefully managing minerals like potassium and phosphorus through food choices. These recommendations are based on current research and should be personalized by your healthcare team based on your blood tests and individual needs.
Peritoneal dialysis is a kidney treatment where fluid goes through your belly to clean your blood at home. What you eat matters a lot for staying healthy during this treatment. According to Gram Research analysis, international experts have created new guidelines to help people on peritoneal dialysis know exactly what foods and nutrients they need. These guidelines cover protein, salt, potassium, phosphorus, and fluids. The recommendations are based on the latest research and are designed to help people feel better, have fewer health problems, and live longer while managing their kidney disease.
Key Statistics
International guidelines for peritoneal dialysis nutrition, published in 2026 in the Journal of Renal Nutrition, provide evidence-based recommendations for protein intake, fluid management, and mineral control to prevent complications in dialysis patients.
The guidelines emphasize that peritoneal dialysis patients lose protein during treatment and require careful dietary management of sodium, potassium, and phosphorus to reduce the risk of heart disease and bone problems.
According to the international consensus guidelines, personalized nutrition plans created by kidney dietitians based on individual blood test results and remaining kidney function are essential for optimal outcomes in peritoneal dialysis patients.
The Quick Take
- What they studied: What nutrition guidelines should people follow when they use peritoneal dialysis, a home-based kidney treatment that filters blood through the belly.
- Who participated: This was a review by international kidney and nutrition experts who looked at existing research to create best-practice guidelines for peritoneal dialysis patients worldwide.
- Key finding: The guidelines provide specific recommendations for protein intake, fluid limits, sodium restriction, and management of minerals like potassium and phosphorus to prevent complications and improve health outcomes.
- What it means for you: If you or a loved one uses peritoneal dialysis, these guidelines can help your healthcare team create a personalized eating plan that reduces the risk of heart problems, bone disease, and other complications. Talk to your kidney dietitian about how these recommendations apply to your specific situation.
The Research Details
This research article is a review of international guidelines for nutrition in peritoneal dialysis. Rather than conducting a new experiment, experts from kidney and nutrition organizations around the world examined all available research and clinical experience to create unified recommendations. The guidelines cover what people should eat and drink when using peritoneal dialysis, which is a treatment where special fluid enters your belly through a tube to clean your blood. The experts looked at evidence about protein needs, how much fluid is safe, salt limits, and mineral management. They combined this information into clear, practical recommendations that doctors and dietitians can use to help patients.
Peritoneal dialysis patients face unique nutritional challenges because the treatment itself affects how their body handles nutrients and fluids. Creating clear, evidence-based guidelines helps ensure that patients worldwide receive consistent, high-quality nutritional care. This approach prevents confusion and helps healthcare teams make better decisions about each patient’s diet.
This is a guideline review from a respected kidney nutrition journal, meaning it represents expert consensus based on current research. The guidelines are international, so they reflect best practices from multiple countries and healthcare systems. However, individual patients may need adjustments based on their specific lab results, body weight, and other health conditions. These guidelines should always be personalized by your healthcare team.
What the Results Show
The international guidelines emphasize that protein intake is crucial for peritoneal dialysis patients because some protein is lost during treatment. The recommendations suggest getting enough protein to maintain muscle mass and strength, but not so much that it creates extra waste for the kidneys to handle. Fluid management is another key focus, as the body’s ability to control fluid balance is damaged in kidney disease. The guidelines provide specific limits based on individual factors like body weight and remaining kidney function. Salt restriction is recommended to help control blood pressure and fluid buildup. The guidelines also address minerals like potassium and phosphorus, which can build up to dangerous levels in the blood and cause heart and bone problems if not carefully managed through diet.
The guidelines also cover energy intake, vitamin and mineral supplementation, and how to adjust nutrition as kidney disease progresses. They address special situations like diabetes, obesity, and malnutrition that commonly occur in dialysis patients. The recommendations include guidance on monitoring and adjusting the diet based on blood test results and how the patient is feeling.
These updated international guidelines build on previous recommendations but reflect newer research about what works best for peritoneal dialysis patients. They aim to create more consistency across different countries and healthcare systems, whereas older guidelines sometimes varied by region. The guidelines also incorporate lessons learned from patients who have done well on peritoneal dialysis over many years.
These are expert recommendations based on available research, but individual patients may respond differently to the same diet. The guidelines cannot account for every person’s unique situation, including other health conditions, medications, or personal food preferences. Patients should work with their kidney dietitian to adapt these general guidelines to their specific needs. Some recommendations may need adjustment based on blood test results and how well the treatment is working.
The Bottom Line
Follow a personalized eating plan created by your kidney dietitian based on these guidelines. This means eating enough protein to stay strong, limiting salt and fluids as recommended, and managing minerals like potassium and phosphorus through food choices. Have your blood work checked regularly and adjust your diet based on the results. These recommendations have strong evidence supporting them for improving health in peritoneal dialysis patients.
Anyone using peritoneal dialysis should pay close attention to these guidelines. Family members who prepare meals should also understand the recommendations. Healthcare providers including nephrologists, dialysis nurses, and dietitians should use these guidelines to create patient-specific plans. People considering peritoneal dialysis as a treatment option should know that nutrition management is an important part of success.
Following these nutrition guidelines should help you feel better within weeks as your blood chemistry improves. Over months and years, proper nutrition reduces the risk of serious complications like heart disease and bone problems. The benefits build over time, so consistency matters more than perfection.
Frequently Asked Questions
How much protein should someone on peritoneal dialysis eat?
Protein needs depend on body weight and how much protein is lost during treatment. Most people need 1.2 to 1.3 grams of protein per kilogram of body weight daily. Your kidney dietitian will calculate your specific target based on your lab results and treatment plan.
Why do peritoneal dialysis patients need to limit salt?
Limiting salt helps control blood pressure and prevents fluid from building up in your body, which can strain your heart. The guidelines recommend keeping sodium intake low, typically under 2,300 milligrams daily, though your doctor may suggest even less based on your condition.
What minerals are most important to watch on peritoneal dialysis?
Potassium and phosphorus are the two minerals that need the most careful management. High levels can cause heart rhythm problems and weaken bones. Your dietitian will help you choose foods low in these minerals while still eating a balanced, nutritious diet.
How much fluid can someone on peritoneal dialysis drink?
Fluid limits vary based on how much urine you still produce and how well your treatment is working. Most people can have 800 to 1,000 milliliters daily, but your nephrologist will set your specific limit based on your blood tests and weight changes.
Do these nutrition guidelines apply to everyone on peritoneal dialysis?
The guidelines provide a framework, but your personal plan should be customized by your kidney dietitian based on your lab results, body weight, other health conditions, and how your body responds to treatment. Regular adjustments keep your plan working well.
Want to Apply This Research?
- Log daily fluid intake in milliliters, sodium in milligrams, and protein in grams. Compare weekly totals to your personalized targets from your dietitian to see if you are staying within recommended ranges.
- Set phone reminders for meal times and use the app to pre-plan meals based on your sodium and potassium limits. Take a photo of your meal before eating to track portion sizes and nutrient content more accurately.
- Review your nutrition logs weekly with the app’s summary feature. Share monthly reports with your kidney dietitian during clinic visits. Track how you feel and any symptoms alongside your nutrition data to identify patterns between diet and wellbeing.
These guidelines represent expert recommendations for nutrition in peritoneal dialysis but are not a substitute for personalized medical advice. Your specific nutritional needs depend on your individual lab results, body weight, remaining kidney function, and other health conditions. Always work with your nephrologist and kidney dietitian to create and adjust a nutrition plan tailored to your situation. Do not make major changes to your diet without discussing them with your healthcare team first, as improper nutrition management can lead to serious complications in dialysis patients.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.