You have been asked to follow a low potassium diet. This booklet 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.
We are aiming to help keep your potassium between:
Please Note
This section can be completed on your physical copy of the leaflet.
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
You have been asked to follow a low potassium diet. 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.
Example: Tomato based curry sauce
Water, tomatoes, onions, concentrated tomato puree, concentrated whole tomatoes, garam masala, vegetable oil, modified starch, garlic puree, ginger and spices.
Tomatoes appear at the beginning of the ingredients and because tomatoes are a high potassium food, the curry sauce will be high in potassium.
- You could avoid this food and choose a suitable alternative
- Or make sure you accompany this meal with a low potassium food such as bread, rice or chapati
- If this is a treat then make sure you have reduced your potassium intake during the day to account for this meal
Salt substitutes
In order to reduce the salt (sodium) content of foods, manufacturers are using salt substitutes to achieve this. LoSalt or potassium chloride are salt substitutes, which 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
A preservative, potassium sorbate, is 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.
Protein foods
Protein foods include meat, poultry, fish, eggs, nuts, pulses and meat substitutes eg. Quorn and tofu. They can be high in potassium but are a valuable food source as they provide protein, vitamins and minerals. For this reason many are not restricted, however you may need guidance on portion sizes.
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
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, yam and plantain are high in potassium; please see page 9 for information regarding portion sizes.
Low Potassium Foods
High Potassium Foods
Low Potassium Foods
High Potassium Foods
Starchy vegetables
This includes potatoes, sweet potatoes, yam and plantain. They contain large amounts of potassium, therefore they need to be limited in the diet. To reduce the potassium content of these foods they should be boiled first.
Below is a list of starchy vegetables. The quantities are equal to one portion. We recommend limiting your intake to …………. portions each day.
Food | Portion |
---|---|
Boiled potatoes | 50 g (1 large ‘egg-size’) |
Mashed potatoes | 50 g (1 ice-cream scoop) |
Instant Mash potato* | 50 g (1 ice-cream scoop) |
Jacket potato | 25 g (avoid skin) |
Manufactured chips | 25 g (approx 6 chips) |
Manufactured roast | 25 g |
potatoes | 40 g |
Plantain | 60 g |
Cassava | 60 g |
Yam | 50 g |
Sweet potato | 40 g |
Breadfruit | 80 g |
Taro | 80 g |
(30 g = 1 oz) * High in salt
Potatoes should be boiled in large amounts of water until soft. The potassium will come out into the water. Throw the cooking water away. Do not use the water for gravy, soup or drinking. Do not use a microwave oven, steamer or pressure cooker to cook potatoes.
Once potatoes have been boiled you can roast them or make them into chips.
Vegetables
Vegetables are an important source of vitamins and minerals as well as fibre. However, they are also a source of potassium. To reduce the potassium content of the vegetables, they should be boiled first in a large amount of water.
Below is a list of vegetables. The quantities are equal to one portion. We recommend limiting your vegetables to …………. portions each day.
Food | Portion |
---|---|
Baked beans | 1 tbsp |
Broad beans | 1 tbsp |
Frozen cauliflower | 2 tbsp |
Fresh cauliflower | 4 tbsp |
Boiled celery | 2 tbsp |
Courgettes | 2 tbsp |
Fresh peas | 2 tbsp |
Frozen peas | 3 tbsp |
Green beans | 2 tbsp |
Leeks | 2 tbsp |
Fried onion | 1 tbsp |
Onion | 3 tbsp |
Brussel sprouts | x6 |
Tinned okra | x14 |
Baked butternut squash | 50g |
Cho-Cho / Christophene | 100g |
Water chestnuts (canned) | 100g |
Sweetcorn | 2 tbsp |
Tinned tomato | 2 tbsp |
Turnip | 2 tbsp |
Broccoli | 3 tbsp |
Cabbage | 4 tbsp |
Carrots | 3 tbsp |
Frozen mixed veg | 3 tbsp |
Mange tout | 3 tbsp |
Runner beans | 3 tbsp |
Spring greens | 3 tbsp |
Swede | 3 tbsp |
Asparagus | 2 spears |
Mushrooms (raw) | 4 medium button |
Mung beansprouts | 4 tbsp |
Ackee | 60 g |
Pumpkin (raw) | 100 g |
Boiled pumpkin | 200 g |
Bamboo shoots | 100 g |
Fresh okra | 50 g |
Red or green pepper | Whole pepper |
tbsp = tablespoon
Avoid artichokes, beetroot (as a vegetable), celeriac, raw celery, raw okra, parsnip, spinach, callaloo (amaranth), chard and kale as they are very high in potassium.
Salad
Making tomato-based sauces
Tomato based sauces can be used if not eaten with potatoes. They can be included within rice and pasta based meals.
- 100 g of tinned tomatoes per portion can be used to make a pasta based sauce
- Alternatively 2 tablespoons of a bought ready-made tomato pasta sauce can be used per portion e.g. Dolmio, Ragu and supermarket own brand
- Tomato puree should not be used
- Vegetables from the above list can be added to the sauce
When making stews
All potatoes and vegetables should be boiled separately, discarding the water, before adding them to stews and casseroles.
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 …………. portions each day.
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.
- Milky bar (standard size, 26 g)
- Blue Riband
- Kit Kat (two finger, 22 g)
- Two Jaffa cakes
- Creme eggs (39 g)
- Mars bar (fun size, 19 g)
- Twix (one single finger, 28 g)
- Four cream filled chocolates (e.g. Quality Street, Roses)
Drinks
If you are provided with a fluid allowance, all drinks should be counted within that allowance. Remember if you add milk to tea or coffee; to use it from your daily allowance.
If diabetic, please choose no-added sugar, light or diet varieties of drinks.
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
Miscellaneous
Low Potassium Foods
High Potassium Foods
Information contained in this booklet is correct at the time of printing, and is intended for your specific needs. If should not be passed on to anyone else. Manufacturers are continually changing the ingredients of their products and altering portion sizes. These changes may affect the potassium content of these foods.
Personal Notes
Please Note
This section can be completed on your physical copy of the leaflet.
Useful websites and reading
www.kidney.org – The National Kidney Foundation provides useful information on kidney disease, treatment and lifestyle
www.kidneycareuk.org – 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 potassium level, you can sign up for Patients Know Best.
kidneycareuk.org – Visit the ‘Kidney Kitchen’ website for low potassium recipes ideas
Eating Well for Kidney Health – A practical guide and cookbook. H. Jackson, C. Green & G. James
Please ask your dietitian if you would like recipe ideas
If you have any suggestions or comments or queries regarding this leaflet please let your dietitian know.
Please Note
This section can be completed on your physical copy of the leaflet.