Diet and Dialysis Abroad: What to Discuss With Your Dietitian
- Not Advice
- This guide explains how the body handles certain nutrients. It does not tell you what to eat. Only your renal dietitian can set your targets, because those targets come from your own blood results, your residual kidney function and your dialysis schedule.
- Individual
- There is no single dialysis diet. Two people on dialysis can be given very different guidance, and both can be correct, because the numbers behind that guidance are personal.
- Our Role
- Reni lists clinics at your destination. We do not give dietary or medical advice. Every question raised here is one to put to your renal team, not to us.
Food is one of the real pleasures of travelling, and it is also one of the most common worries for people on dialysis who are planning a trip. This guide is written to be useful without overstepping: it explains the background, so that the conversation you have with your own renal team is a better one.
It does not tell you what to eat. It cannot. Read on for why that is not a dodge, but the actual point.
Why there is no single dialysis diet
People often expect a fixed list: foods that are fine, foods to avoid. Renal care does not work that way.
The guidance you are given is built from things that are specific to you: your recent blood results, how much kidney function you still have, your dry weight, and the type and frequency of your dialysis. Two people sitting in the same waiting room can be given different, even opposite, guidance, and both can be right.
This is why a general article that told you what to eat would not just be unhelpful, it could be actively wrong for you. Your renal dietitian is the only person who can set your targets, because they are the only one holding your numbers.
What the body is doing with these nutrients
Your renal team will have mentioned some of the following. This section is here so the words are familiar, not so you can act on them.
Potassium and phosphate. Healthy kidneys constantly fine-tune the levels of several minerals in the blood, keeping them in a narrow range and clearing whatever is surplus. When kidney function is reduced, that automatic adjustment is reduced too, so those levels are monitored through blood tests instead. These minerals occur across a very wide range of ordinary foods, which is why the guidance around them is rarely as simple as a short list, and why it is tailored per person.
Sodium. Sodium is closely tied to thirst and to how much fluid the body holds. Because of that link, guidance about it usually travels together with guidance about fluid rather than separately.
Fluid. Between sessions, fluid that would normally be passed out of the body can accumulate, and dialysis removes it. How much room you have between sessions is individual, and it is one of the things your team watches most closely.
Notice what is missing here: any number, any target, any list. That is deliberate. Those belong to you and your dietitian, not to a web page.
Why travel changes the picture
Travel does not change the underlying principles, but it does change the conditions around them, which is worth planning for.
- Heat and sweating. A hotter climate than you are used to affects the body's fluid balance. If you are travelling somewhere significantly warmer, this is worth raising specifically.
- Unfamiliar food. Dishes are prepared differently in different places, and ingredients are not always obvious from a menu. Preparation methods can matter as much as the ingredients themselves.
- Disrupted routine. Long travel days, time zones and altered meal times can unsettle a routine you have carefully built at home. Your first day is usually the most disrupted.
- Different sessions. Your sessions abroad may be at different times of day than you are used to, which shifts everything else around them.
None of this means travel is a problem to be solved by restriction. It means it is worth a conversation before you go, while there is still time to plan.
What to ask your renal team before you travel
This is the part you can act on. Book time with your dietitian or renal nurse well before departure, and use it well.
Ground worth covering:
- Does anything in my current guidance change while I am travelling, or does it stay the same?
- What should I do on long travel days, when my routine is disrupted?
- I am going somewhere hotter than home. Does that change anything for me?
- How should I approach food I am not familiar with, without either worrying constantly or getting it wrong?
- What are the signs that I should contact someone while I am away?
- Who do I contact, and how, if I have a question mid-trip?
Ask for the essentials in writing. A short note from your team, carried alongside your travel letter and prescription, is far more use at your destination than something half remembered from before you left. Your destination clinic can also be asked about local practicalities once your sessions are confirmed, and they will be used to visiting patients asking.
What Reni can help with
We list dialysis centres across European destinations, with contact details for each, so you can find a centre and arrange your sessions directly. Confirming your treatment is the part we can make easier.
We do not give dietary or medical advice, and we are not qualified to. For anything about what you eat and drink, your renal dietitian is the right person to ask, and this guide is only meant to help you arrive at that conversation better prepared.
Frequently asked questions
Is there a standard dialysis diet I can follow while travelling?
No. Renal dietary guidance is set individually, from your blood results, your residual kidney function, your dry weight and the type and frequency of your dialysis. Guidance that is right for one person can be wrong for another. Ask your renal dietitian what applies to you before you travel, and follow that rather than any general article, including this one.
Why do potassium and phosphate come up so often in dialysis?
Healthy kidneys continuously adjust the levels of several minerals in the blood, and remove what the body does not need. When kidney function is reduced, that adjustment no longer happens the same way, so those levels are tracked through regular blood tests instead. That is why your renal team keeps returning to them. What your individual results mean, and what if anything should change because of them, is a conversation for your team.
Does travelling change anything about fluid balance?
It can. Heat, sweating, long journeys and a change of routine all affect the body's fluid balance, and your usual schedule may shift around travel days. That is exactly why it is worth raising your trip with your renal team in advance: they can tell you whether anything in your case needs attention. Do not adjust your own fluid or dietary targets based on how you feel or on general information found online.
What should I ask my dietitian before a trip?
Useful ground to cover: whether anything in your current guidance changes while you travel, what to do on long travel days when your routine is disrupted, how a hot climate might affect you, how to approach unfamiliar food confidently, and who to contact if you have a question while you are away. Ask them to put the essentials in writing so you can carry it with your other travel documents.
Can Reni tell me what I should eat at my destination?
No. We are a directory that helps you find and contact dialysis centres. We do not give dietary or medical advice, and we are not qualified to. Your renal dietitian is the right source, and your destination clinic can also be asked about local practicalities once your sessions are confirmed.