What Can You Eat on Hemodialysis?

The short answer is: there’s no single “dialysis diet” that applies to everyone. Most people are asked to pay closer attention to sodium, potassium, phosphorus, protein, and fluid once they start hemodialysis, but the specific limits and targets are set for you individually, based on your lab results, urine output, and how your body responds to treatment. This guide explains why those five areas matter and how to think about eating on dialysis without relying on a generic “good foods / bad foods” list.

Why eating recommendations often change after starting dialysis

Before dialysis, many people with kidney disease are told to limit protein to reduce the kidneys’ workload. Once you start hemodialysis, that advice often reverses — protein needs typically go up, not down, because dialysis itself removes some protein and treatment can be demanding on the body. At the same time, because dialysis doesn’t work continuously the way healthy kidneys do, minerals like potassium and phosphorus can build up between treatments if intake isn’t managed. This is why the diet that made sense earlier in kidney disease often needs to change once dialysis starts.

Why your lab results matter more than a generic list

Your monthly labs — particularly potassium, phosphorus, and albumin — tell your care team much more about your diet than any general list of “renal-friendly” foods could. Two patients can eat very similar meals and end up with very different lab results, depending on their remaining kidney function, dialysis schedule, and how their body handles specific nutrients. This is why your dietitian will often adjust guidance based on your actual numbers rather than a one-size-fits-all chart.

Sodium

Sodium affects thirst and fluid retention, which connects directly to fluid restriction between treatments. Eating high-sodium foods tends to make people thirstier and can contribute to larger weight gains between treatments, which in turn can make fluid removal harder during your next session. Packaged, canned, and restaurant foods are common sources of sodium that don’t always taste especially salty.

Potassium

Potassium is a mineral your kidneys normally help regulate. On dialysis, potassium can build up between treatments, and unusually high or low levels can affect your heart rhythm. Your potassium limit, if you have one, depends on your labs and your dialysis schedule — some patients need to watch potassium closely, while others have more flexibility, particularly depending on residual kidney function and treatment frequency.

Phosphorus

Phosphorus is naturally present in many protein-rich foods, and it’s also added to a lot of packaged and processed foods, often in a form the body absorbs very efficiently. Because dialysis removes phosphorus less efficiently than it removes some other substances, phosphorus levels can climb between treatments. Many patients are prescribed a phosphorus binder to take with meals — if you’re prescribed one, your dietitian or care team can explain how and when to take it for it to work as intended.

Protein

Protein needs commonly increase once someone starts hemodialysis, since treatment itself removes some protein and adequate protein intake is linked to better strength, healing, and outcomes on dialysis. This is a significant shift for people who were previously told to limit protein earlier in kidney disease, and it’s one of the most common points of confusion for people who are new to dialysis. Ask your dietitian what a practical protein target looks like for your meals and snacks.

Fluids

Diet and fluid management are closely connected, since many foods (soup, ice cream, gelatin, watermelon) count toward fluid intake, and sodium intake directly affects thirst. For a closer look at managing fluid day to day, see How to Manage Fluid Restriction on Dialysis.

Why recommendations differ from patient to patient

Diet guidance on dialysis depends on several individual factors, including:

your current lab values, especially potassium, phosphorus, and albumin
how much urine you still make
your dialysis schedule and treatment adequacy
other health conditions, such as diabetes or heart disease
your weight, appetite, and nutritional status

This is why two people at the same dialysis center can be given noticeably different diet instructions, and why food lists shared between patients aren’t a reliable substitute for your own dietitian’s guidance.

The role of your renal dietitian

Most dialysis centers have a renal dietitian who reviews your labs regularly and adjusts your nutrition guidance as your situation changes. They can help translate lab numbers into practical meal choices, suggest substitutions for foods you enjoy, and flag patterns before they become a bigger problem. If you haven’t met with your dietitian recently, or your labs have changed, it’s worth asking for an updated conversation rather than relying on guidance from months or years earlier.

Why blanket food restrictions can be misleading

Generic “foods to avoid on dialysis” lists circulate widely, but they can be misleading because they don’t account for your labs, your treatment schedule, or how much of a given food you actually eat. A food that’s genuinely a problem for one patient may be perfectly fine in moderation for another. Rather than memorizing an avoid list, it’s usually more useful to understand why sodium, potassium, phosphorus, protein, and fluid matter, and to work with your dietitian on specifics.

Questions worth asking your renal dietitian

Based on my recent labs, which nutrient should I focus on most right now?
What does an appropriate protein target look like for my meals?
Do I need a phosphorus binder, and how should I take it?
Are there foods I’m eating regularly that I should reconsider?
How often should we revisit my diet plan?

The main thing to remember

Eating on hemodialysis isn’t about memorizing a universal list of good and bad foods. It’s about understanding how sodium, potassium, phosphorus, protein, and fluid work together, and working with your renal dietitian to translate your own labs into a plan that fits your life. What’s appropriate for one patient may not be appropriate for another, even on the same treatment schedule.

Related Renal Care Planner Resources

Frequently Asked Questions

What foods should I completely avoid on dialysis?

There’s no single list that applies to every patient. Some foods are more likely to be limited — high-sodium processed foods, and foods very high in potassium or phosphorus — but how much you can have depends on your labs and overall diet plan. Ask your dietitian about your specific situation.

Why do I need more protein now that I’m on dialysis?

Dialysis removes some protein from the body during treatment, and adequate protein supports strength and healing. This is often the opposite of earlier kidney-disease advice, which is why it surprises many people who are new to dialysis.

Do I have to see a renal dietitian, or can I just follow a general list online?

General information can help you understand the “why” behind dialysis nutrition, but your actual targets should come from your renal dietitian, since they’re based on your labs, urine output, and treatment plan, which a general list can’t account for.

Can my diet on dialysis change over time?

Yes. As your labs, urine output, appetite, or overall health change, your dietitian may adjust your sodium, potassium, phosphorus, protein, or fluid guidance. It’s not meant to be a one-time plan you follow forever without review.

Sources

National Institute of Diabetes and Digestive and Kidney Diseases, Eating & Nutrition for Hemodialysis
National Kidney Foundation, Hemodialysis and Your Diet
Academy of Nutrition and Dietetics, Nutrition for Adults on Hemodialysis

General education only. Renal Care Planner provides general educational information and planning resources and does not replace individualized dietary or medical advice. Sodium, potassium, phosphorus, protein, and fluid targets vary by patient and should be set and adjusted by your renal dietitian and care team based on your labs and health status.