THE SIMPLE SALT SWAP THAT COULD PREVENT 3 MILLION DEATHS A YEAR
It might be the easiest health upgrade in your pantry, because a simple salt swap could help prevent millions of deaths around the world every year.
That is the striking finding of new research from Sydney's The George Institute for Global Health, published this week in the journal Nature Health.
The researchers looked at what would happen if regular table salt was replaced with potassium-enriched salt, a substitute that swaps some of the sodium chloride for potassium chloride.
According to their modelling, a full global switch could prevent almost 3 million deaths and around 10 million new cases of heart and kidney disease each year.
What Is The Salt Swap Everyone Is Talking About?
Potassium-enriched salt looks, tastes and cooks much like the regular salt most of us grew up with.
The difference is in the chemistry, because part of the sodium is replaced with potassium.
That matters because eating too much sodium and too little potassium are both well-established drivers of high blood pressure.
High blood pressure, in turn, raises the risk of stroke, heart attack and kidney disease.
The study notes that roughly one in three adults aged 30 to 79 worldwide has high blood pressure, which adds up to around 1.4 billion people.
The George Institute's Professor Bruce Neal said switching tackles both dietary problems at once, describing the potential benefits as "substantial".
The Numbers Behind The Study
The team modelled the impact across 193 countries, testing several different scenarios.
If every bit of salt, from the shaker to the factory, were switched, the model estimated 2.96 million deaths and 10.17 million cases of cardiovascular and kidney disease could be prevented each year.
Swapping only the salt we use at home was still powerful, with an estimated 1.85 million deaths prevented.
Changing only the salt in processed and restaurant food was estimated to prevent 1.56 million deaths.
Even the narrowest scenarios, focusing only on people already diagnosed or treated for high blood pressure, showed meaningful gains.
For Australia, the researchers estimated a full switch could prevent around 2,076 deaths and about 17,750 fatal and non-fatal heart and kidney events every year.
Why The Food Industry Matters
The researchers point out that in Europe and North America, more than 70 per cent of the salt people eat comes from processed and restaurant foods rather than the salt shaker.
That means food manufacturers would need to get on board for the biggest gains.
Production of potassium chloride would also need to be scaled up to meet demand.
The World Health Organization endorsed potassium-enriched salt in 2025 as a way to help lower blood pressure, a move The George Institute welcomed at the time.
Is A Salt Swap Right For You?
For most healthy adults, a salt substitute is likely to be an easy change, but it is not for everyone.
The main concern is high potassium levels in people with advanced kidney disease.
People taking medicines that significantly raise blood potassium also need to take precautions.
The study found the benefits still outweighed the risks for these groups, and Professor Vivek Jha said the risks can be managed with education, labelling and medical oversight.
If you have kidney problems, take regular medication or are simply unsure, speak to your GP or pharmacist before making the switch.
Easy Ways To Cut Back On Salt
Whether or not you change your salt, there are simple ways to ease off sodium at home.
Taste your food before reaching for the shaker, as many of us add salt out of habit.
Cook with herbs, garlic, lemon juice, chilli and spices to build flavour without relying on salt.
Check labels on bread, sauces, stock and breakfast cereals, which can be surprisingly salty.
Load up on potassium-rich foods such as leafy greens, bananas, potatoes, beans and yoghurt.
Rinse tinned beans and vegetables before using them to wash away some of the added salt.
And if you are curious about salt substitutes, have a chat with your GP at your next check-up about whether one suits you.
Small changes in the kitchen really can add up to a healthier heart over time.
