Kidney Nutrition & Dialysis Diet
Eating the right foods is one of the most powerful ways to feel better during kidney care. The foods and drinks you choose can lower the stress on your kidneys, help you feel stronger, and support your treatment. Our kidney nutritionists build a nutrition plan around your health, your lab results, and the foods you already enjoy. You don’t have to change everything at once, and you don’t have to do it alone.
What is a kidney (renal) diet? A kidney diet, also called a renal diet, is an eating plan that limits certain minerals, mainly sodium, potassium, and phosphorus, and often limits fluid. The goal is to keep these minerals at safe levels so your kidneys and body aren’t overworked. Your dietitian sets your personal limits based on your blood tests and whether you’re on dialysis.
Dietary Tips From Our Nutritionists
If you’re having kidney trouble or are on dialysis, a nutrition plan will be key to your healthcare. At Kidney Institutes, our nutritionists will help you develop a plan tailored specifically for your needs.
Our kidney care specialists, nurses, dietitians, and social workers work together as one team, so support is always close by.
A kidney-friendly diet isn’t about a long list of “no” foods. It’s about smart swaps and the right amounts. Small changes add up, and your dietitian will help you make them feel simple.
Dietitian’s tip: Your diet plan is personal. Your dietitian uses your blood test results to set your own targets for sodium, potassium, phosphorus, and fluid, so no two plans look exactly alike.
A Quick Guide to Kidney-Friendly Food
A diet that’s good for your kidneys isn’t quite as limiting as you might imagine. Here are some of the kidney-friendly foods that our nutritionists may incorporate into your diet plan. Most of these picks are lower in potassium and phosphorus, which makes them easier on your kidneys. Portion size still matters, so enjoy them as part of the plan we build with you.
Fruits
- Apples
- Blueberries
- Pineapple
- Red Grapes
- Strawberries
Vegetables
- Bell Peppers
- Cabbage
- Cauliflower
- Kale
- Spinach
Meat
- Pork Chop
- Salmon
- Sirloin Steak
- Skinless Chicken Breasts
- Skinless Turkey Breast
Bread
- Bagels
- Baguettes
- Ciabatta Bread
- Pita Bread
- White Bread
Remember: When two foods are alike, pick the one that’s lower in potassium and phosphorus. For example, an apple is a lower-potassium choice than a banana.
Foods to Enjoy Less Often (Watch the Potassium and Phosphorus)
Some everyday foods are high in potassium or phosphorus, so they can add up fast. You don’t always have to skip them. Often, a simple swap or a smaller portion does the job. Talk with us before you cut anything out, because your labs guide what’s right for you.
| Instead of (higher in potassium or phosphorus) | Try (usually lower) |
|---|---|
| Banana or orange | Apple, berries, or red grapes |
| Potato | White rice or pasta |
| Whole-grain or whole-wheat bread | White bread, bagels, or pita |
| Dark cola (added phosphates) | A clear soda or water, within your fluid limit |
| Nuts, dried beans, and lentils | Chicken, turkey, or fish, based on your protein plan |
| Large servings of milk and cheese | Smaller portions or the swaps your dietitian suggests |
Limit Your Intake of These Main Nutrients
Four things need the most attention on a kidney diet: sodium, fluids, phosphorus, and potassium. Here’s why each one matters and how to manage it.
Sodium
Limiting your sodium intake will help control your blood pressure and keep your body from retaining too much fluid. Use herbs and spices instead to add flavor to your food.
Fluids
Kidneys that are not functioning well may have trouble getting rid of the excess water. For most dialysis patients, 32 ounces per day is the limit.
Phosphorus
Kidneys that are not functioning well cannot remove phosphorus from the blood, and the high levels in your body can cause additional health problems.
Potassium
Improperly functioning kidneys have trouble removing potassium from your blood. Some fruits, vegetables, and whole-grain bread have high potassium levels.
How to Build a Kidney-Friendly Plate
Building a kidney-friendly plate is easier than it sounds once you know the pattern. Start with a lean protein like skinless chicken, turkey, or fish. Add a lower-potassium vegetable and a serving of white rice, pasta, or bread. Season with herbs and spices instead of salt, and match your drink to your fluid limit.
Your protein needs can change over time. Before dialysis, we may ask you to watch how much protein you eat. Once you start dialysis, you often need more protein, not less, because treatment removes some from your body. Our team, along with our dialysis services, will guide the right amount for your stage.
If you travel, your plan can travel with you. Snowbird patients and anyone heading out of town can keep eating well on the road, and our guide to traveling on dialysis shows how to plan meals and treatment away from home.
More Nutritional Resources
For more dietary guidelines and recipes, visit these trusted resources:
Kidney Nutrition Questions, Answered
Get answers to the questions we get the most. You can also reach out to speak with someone on our team.
What foods are best for a kidney-friendly diet?
The best foods for a kidney-friendly diet are usually lower in potassium and phosphorus. Good picks include apples, blueberries, red grapes, cauliflower, cabbage, bell peppers, skinless chicken or turkey, fish, and white breads like bagels and pita. Your dietitian will fine-tune the list based on your lab results and your stage of kidney care.
How much fluid can I drink on dialysis?
For most dialysis patients, the daily fluid limit is about 32 ounces, which is 4 cups. This includes water, coffee, soup, ice, and juicy foods, not just drinks. Because everyone is different, your care team sets your exact limit. Staying within it helps prevent swelling and eases the work your heart and lungs have to do.
Why do I need to watch potassium and phosphorus?
Healthy kidneys remove extra potassium and phosphorus from your blood, but kidneys that aren’t working well can’t. Potassium that’s too high can affect your heartbeat. Phosphorus that stays too high can weaken your bones and harm your heart over time. Managing both keeps you safer and feeling better, which is why they’re a main focus of any renal diet.
Can I still eat fruit on a renal diet?
Yes, you can still enjoy fruit on a renal diet. The key is choosing lower-potassium options and watching your portions. Apples, berries, pineapple, red grapes, and strawberries are kidney-friendly choices. Higher-potassium fruits like bananas and oranges are best saved for special occasions or smaller amounts, and your dietitian can help you decide.
Is the diet the same before and during dialysis?
No, the diet often changes when you start dialysis. Before dialysis, your dietitian may ask you to limit protein and certain minerals to protect your kidneys. Once you begin dialysis, you usually need more protein because treatment removes some from your body. This is why a personalized plan matters, and why we review it as your care changes.
How much sodium should I eat with kidney disease?
Most people with kidney disease should aim for less than 2,300 mg of sodium a day, based on National Kidney Foundation guidance, and many need less. Too much sodium raises blood pressure and makes your body hold extra fluid. Cooking at home, using herbs and spices, and checking labels on packaged foods are simple ways to lower your salt.
Get Your Nutritionist-Approved Diet Plan
Our nutritionists can help you develop the right diet plan for your kidney health. You can even get started before you visit with our new-patient forms, which are protected under HIPAA and used only to care for you. Check our locations below, where you can find our nutritionists and care team.
Additional Resources
We’re Here for You.
Our goal is to build a relationship with each patient and develop individual treatment plans. Let’s get in touch today.
