Potassium salt swap: a model counts deaths that could be avoided
· BehindLines newsroom
A modelling study released on 4 November 2026 in the journal Nature Health estimates that swapping ordinary table salt for potassium-enriched salt could prevent roughly 2.96 million deaths a year from cardiovascular disease and chronic kidney disease. It is a simulation, not a trial with patients.
What the model calculated
The authors simulated replacing regular salt with a blend of 75% sodium chloride and 25% potassium chloride, across five scenarios. If all salt eaten worldwide were swapped, they put the yearly toll avoided at about 2.96 million deaths (uncertainty interval 2.81 to 3.12 million), 10.17 million new cases and 69.43 million disability-adjusted life years. That equals 14.6% of the deaths attributable to these conditions. According to the George Institute text carried by Medical Xpress, the calculation covers 193 countries.
More targeted scenarios
Switching only the salt added at home would avert 1.85 million deaths a year; switching only the salt in processed and restaurant food, 1.56 million. Aiming solely at people with diagnosed high blood pressure would avert 0.59 million, and at those already treated for it, 0.48 million.
The caveats
For people with advanced chronic kidney disease, the model estimates the swap could cause 0.10 million deaths from too much potassium in the blood (hyperkalaemia), against 0.75 million cardiovascular deaths prevented. Bruce Neal of the George Institute calls a worldwide switch "aspirational", and nephrologist Vivek Jha says these risks can be handled through patient education, labelling and clinical follow-up. By the same account, more than 70% of the salt eaten in Europe and North America comes from processed food or restaurant meals, so results there would also depend on the food industry. The World Health Organization endorsed potassium-enriched salt in 2025.
These figures are estimates built on assumptions, not observed outcomes. This article is general information and does not replace a doctor's advice.