Spotlight on... low-salt diets

  • By
    Jo Lewin - Nutritional therapist

Moderation is key when it comes to salt consumption. Nutritionist Jo Lewin discusses recommended daily allowances, foods to avoid and the health implications of a low-salt diet.

Spotlight on... low-salt diets

Salt is one of the simplest, most important ingredients on the planet. However, with the increase in consumption of processed foods, excessive salt consumption has become a risk to our health. The ability of the simple white crystals to preserve food founded civilisations and continues to be integral in the kitchen - simply imagine a world without pickles!

Fascinating facts...
It is believed Roman soldiers were paid with salt; the word salary derives from the Latin salarium possibly referring to the money given to soldiers so they could buy salt.
The term 'salt of the earth' refers to those with 'great worth and reliability'.


Salt and blood pressure...

Salt is made up of sodium chloride. Too much sodium can be harmful to our health and should only be eaten in small amounts. Salt contributes to high blood pressure. Having high blood pressure increases the risk of developing coronary heart disease or having a heart attack. It is the sodium in salt that contributes to high blood pressure by disrupting the balance of electrolytes (potassium, sodium, chloride and magnesium) in the body. Most people eat far more salt than they need.


Salt RDAsalt

It is recommended that adults have no more than 6g of salt a day or 2.4g of sodium. That's about one teaspoonful. There is sodium in all types of salt whether it is salt in grains, crystals or flakes. Approximately three-quarters of the salt we eat is 'hidden' in packaged/processed foods.

Check the food labels on items that you regularly buy. Always look on the per 100g column. Most food labels show the amount of sodium rather than salt. To convert the figure from sodium to salt, you need to multiply it by 2.5 - e.g. 2 grams of sodium = 5g of salt (2 x 2.5)


Salt & sodium per 100g
 High saltMedium saltLow salt
Salt (g) per 100gMore than 1.25gBetween 1.5-0.3gLess than 0.3g
Sodium (g) per 100gMore than 0.5gBetween 0.6-0.1gLess than 0.1g

Blood pressureHealth Implications

Cardiovascular disease includes coronary heart disease (angina and heart attack) and stroke. It is the most common cause of death in the UK. People with high blood pressure - known as hypertension - have a higher risk of having a heart attack or stroke. The only way of knowing if you have high blood pressure is to have it measured by your doctor. The target for a healthy adult is to have a blood pressure below 140/85mmHg.

If you are experiencing symptoms of headaches, breathlessness, nose bleeds or problems with sight it is advised you go to your GP to check your blood pressure. For more information visit

If you have high blood pressure, it is essential to try and control it. Even reducing your blood pressure by a small amount can lower your risk. You can do the following things:

  • Do more physical activity
  • Keep to a healthy weight
  • Cut down on salt
  • Cut down on alcohol
  • Eat more fruit and vegetables

Tips for reducing salt intakesalt shaker

  • Omit salt when you are preparing food and taste before you season
  • Learn to enjoy the flavours of unsalted food -€“ you will find that within a few weeks your taste buds will get used to it.
  • Try low salt substitutes (various brands available online or from health shops).
  • Try flavouring foods with pepper, garlic, herbs, spices and lemon juice instead of salt
  • Read food labels carefully to determine the amounts of sodium and learn to recognise ingredients that contain sodium e.g. soy sauce, brine, mono sodium glutamate, baking soda.
  • Look for words that can signal high sodium content such as barbecued, broth, marinated, pickled and smoked.
  • Cut down on processed foods that contain a lot of salt


Examples of foods where some
brands or recipes are high in salt

Foods that are often high in salt
Baked beansAnchovies
Breakfast cerealsBacon

Bread products, such as crumpets,
bagels, ciabatta

Cooking & pasta saucesDry roasted nuts
Crisps & salted nutsGravy granules and stock cubes
Instand noodlesHam
Packet/canned soupOlives
Ready mealsPrawns
Sausages & burgersSalt fish
Tomato ketchup, Mayonnaise, etc...Smoked meat & fish
 Soy sauce

Strike a balance

the occasional dip into some salted crisps, olives or smoked salmon isn't going to harm you as the body monitors salt levels and excretes excess in our urine. Use it judicially, cutting it out gradually so you learn to live with less.

Reduced salt alternatives

contain less sodium than standard salt, but they are not sodium free. Because these alternatives taste salty, they don't help you get used to less salty flavours. It's better to gradually reduce the amount of salt you eat until finally you eat hardly any added salt at all. If you are doing high levels of exercise or activity that means you are losing an excessive amount of sodium through perspiration or diuretics you may need to consume more than the minimum 500mg of salt recommended daily. If you are unsure please consult your GP.

Reduced salt alternatives are not suitable for some people so always check with your doctor before using these products.


RecipesRaspberry & blueberry lime drizzle cake

Try and cook more meals using basic ingredients for example meat, fish, vegetables, pulses and beans instead of eating processed foods or ready meals.

Using herbs and spices to flavour foods will reduce the salt content:
Spice-rubbed haddock fillets on orange & parsley couscous
Moroccan meatball tagine with lemon & olives

Lovely low-salt salads make a healthy supper and increase vegetable intake
Avocado & leaf salad
Preserved lemon & tomato salad with feta

Family friendly supper ideas:
Chicken & chorizo jambalaya
Superhealthy salmon burgers
No-fuss shepherd's pie
Ricotta & basil pizza bread

Want to try making your own bread?
Courgette & mushroom bread
Mixed seed bread
Date & fig bread

Or a little sweet satisfaction:
Simple jammy biscuits
Raspberry & blueberry lime drizzle cake


Jo Lewin holds a degree in nutritional therapy and works as a community health nutritionist and private consultant. She is an accredited member of BANT and is covered by the association's code of ethics and practice.

All health content on is provided for general information only, and should not be treated as a substitute for the medical advice of your own doctor or any other health care professional. If you have any concerns about your general health, you should contact  your local health care provider. See our website terms and conditions for more information.

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