You have been asked to follow a low potassium diet. This Information has been designed to enable you to continue to enjoy your food whilst following a low potassium diet
What is potassium?
Potassium is a mineral that is essential for life. It is found in our blood and food. It is important for the normal function of all nerves and muscles, including the heart. Potassium is present in most food and drinks.
Why is the amount of potassium in my blood high?
The kidneys normally help to control the level of potassium in our blood. When the kidneys are not working properly, the level of potassium in the blood may become too high. This can be dangerous as it can affect the way the heart beats.
Potassium is found in all the food that we eat but it is particularly high in fruit, vegetables, potatoes and some herbs and spices. These guidelines will help you to lower your daily intake of potassium.
Other causes of abnormal potassium levels
Other factors may also cause an abnormal potassium level.These can include recent blood transfusions, medication, muscle breakdown, constipation and poorly controlled diabetes.
If you are experiencing constipation or struggling to control your diabetes, seek further medical advice.
Other dietary needs
If you have other dietary needs such as diabetes, it is important you continue to follow this. The dietitian can discuss further information about this with you.
We do not recommend the purchase of over the counter multivitamins. Please do not hesitate to discuss this with the dietitian if you have any questions.
Food labelling
Potassium is not listed under the nutritional values on food and drink labels. However you may want to use the ingredients list as a guide. The ingredients are listed in order of quantity, therefore should it list a high potassium food first you may wish to avoid it.
Salt substitutes
In order to reduce the salt (sodium) content of foods, manufacturers are using salt substitutes. Salt substitutes including LoSalt (potassium chloride) and supermarket own brands are high in potassium. If potassium chloride is listed as part of the ingredients, it is recommended this food product is avoided
Example: Reduced salt baked beans
Haricot beans, water, tomato puree, sugar, modified maize starch, potassium chloride, salt and sweetener.
Preservatives
Preservatives such as potassium sorbate are often added to food and drinks such as cordials and squashes. This does not need to be avoided.
Eating out and celebrations
It can be difficult to choose a meal when eating out or at a time of celebration, while keeping in mind your low potassium diet.
If you require further information about this ask your dietitian for guidance.
When making curries
Milk and dairy products
These foods are an important source of protein and calcium. They do contain potassium therefore you may need guidance on portion sizes
Recommended allowance
Vegetables
The following vegetables can be included in curry sauces if they are pre boiled first and the water they are boiled in is thrown away: Asparagus, cauliflower, courgette, broccoli, curly kale, mustard leaves, spinach, spring greens, mushrooms and pumpkin.
Dhal and pulses
Some lentils are higher in potassium than others. Please refer to the choices below to identify the lower potassium varieties.
- Dhal and pulse dishes made from the lower potassium pulses can be safely included as a vegetarian meal
- Generally split lentils are lower in potassium than whole lentil varieties
Side salads
If you wish to enjoy a small side salad with your meal then choose three options from this list:
- 6 small lettuce leaves 1 tablespoon sweetcorn
- 2 slices of a medium tomato Kernels
- 7 thin slices of cucumber 3 rings of yellow pepper
- ½ celery stick 4 rings of red pepper
- ½ raw apple 5 rings of green pepper
- 2 spring onions 2 slices of pickled beetroot
- 3 small radishes 1 oz raw cabbage
- 1 tablespoon grated carrot 1 slice of raw onion
- Salads can be dressed with olive oil, vinegar, vinaigrette, mayonnaise or lemon juice.
Salads can be dressed with olive oil, vinegar, vinaigrette, mayonnaise or lemon juice.
Herbs and spices
Herbs and spices will also add to your overall potassium intake. The measurements are given as per person serving i.e. multiply the recommended amount by the number of portions the dish is estimated to provide.
Example: 2 teaspoons of garam masala can be added to a curry to feed a family of four
tsp = tablespoon
- Turmeric is mainly a food colourant so try to avoid or use less as it is high in potassium
- Fresh herbs tend to be lower in potassium so try to use these in preference to dried herbs e.g. use fresh coriander rather than coriander powder
- Green chillies are lower in potassium than red chillies so try to use these in preference
- If you want to add extra heat to a dish try adding fresh chilli when you fry your onions, rather than chilli powder
Starchy foods
These foods are an essential part of the diet and should be included with every meal. They provide us with energy and fibre as well as minerals. Some starchy foods, for example potatoes and sweet potatoes are high in potassium; please refer to information regarding portion sizes.
Fruit, nuts and seeds
Fruit, nuts and seeds are an important source of vitamins and minerals as well as fibre. However, they are also a source of potassium.
Below is a list of fresh, tinned, stewed fruit and fruit juice. The quantities are equal to one portion. We recommend limiting your fruit, nuts and seeds to advice given by the dietitian to specific portions each day.
tbsp = tablespoon tsp = teaspoon
Please avoid starfruit.
Drinks
If diabetic, please choose no-added sugar, light or diet varieties of drinks.
Snacks and desserts
This group of foods contain a lot of fat and sugar. These foods can be eaten freely, unless advised differently by your dietitian. If you have diabetes, remember to follow your diabetic diet.
Chocolate
The following brand names are lower in potassium than others. It is safe to choose one from the list below each day, unless advised differently by the dietitian.
- Blue Riband
- Kit Kat (two finger, 22 g)
- 2 Jaffa cakes
- Creme eggs (39 g)
- Mars bar (fun size, 19 g)
- Twix (1 single finger, 28 g)
- 4 cream filled chocolates (e.g. Quality Street, Roses)
Useful websites and reading
www.kidney.org – The National Kidney Foundation provides useful information on kidney disease, treatment and lifestyle
www.kidneypatientguide.org.uk – Kidney Care UK, offers advice and support for those living with kidney disease. Visit the Kidney Kitchen for recipe ideas
www.beamfeelgood.com – Kidney Beam helps people living with kidney disease to feel good through movement, education and wellbeing support
my.patientsknowbest.com – If you would like to know your latest blood levels, you can sign up for Patients Know Best.
Eating Well for Kidney Health – A practical guide and cookbook. H. Jackson, C. Green & G. James
If you have any suggestions or comments regarding this leaflet please let your dietitian know. The information contained is intended for your specific needs and should not be passed on to anyone else.
Information contained in this booklet is correct at time of production. Manufacturers are continually changing the ingredients of their products and altering portion sizes. These changes may affect the potassium content of these foods.
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