A new international study identifies a potentially powerful strategy against cardiovascular disease, while warning that the alternative is not safe for everyone.
SYDNEY, AUSTRALIA — November 4, 2026. Replacing conventional table salt with a potassium-enriched alternative could prevent nearly three million deaths worldwide every year, according to a major international study published in Nature Health. Researchers from The George Institute for Global Health in Australia examined the potential consequences of changing salt consumption across 193 countries, identifying substantial opportunities to reduce cardiovascular disease and chronic kidney disease. Their findings suggest that a relatively inexpensive dietary intervention could generate significant public health benefits, although its implementation would require medical safeguards, food industry participation and careful consideration of national dietary patterns.
The research estimates that replacing conventional salt throughout the global food supply could prevent approximately 2.96 million deaths and 10.17 million new cases of cardiovascular and kidney disease annually. It could also prevent an estimated 69.43 million disability-adjusted life years, a measure combining premature mortality with years lived in poor health. These figures are projections derived from statistical modeling rather than deaths already prevented through a worldwide intervention. Their significance lies in illustrating the potential population-level benefits of modifying an ingredient consumed by billions of people.
The proposed alternative works by replacing part of the sodium chloride found in conventional salt with potassium chloride. Excessive sodium consumption contributes to elevated blood pressure, while inadequate potassium intake can make blood pressure regulation more difficult. Potassium-enriched salt addresses both factors simultaneously without requiring people to eliminate seasoning from their diets. The product generally resembles ordinary salt in appearance and culinary use, although its taste can vary depending on its composition.
The biological relationship is especially important because hypertension remains a leading risk factor for heart attacks, strokes and kidney disease. According to the World Health Organization (WHO), approximately 1.4 billion adults aged 30 to 79 live with high blood pressure. Cardiovascular diseases caused an estimated 19.2 million deaths worldwide in 2023, reinforcing the need for affordable preventive strategies. Bruce Neal, a senior researcher at The George Institute, emphasized that reducing sodium while increasing potassium offers a practical opportunity to address two important dietary contributors to hypertension.
Researchers examined several implementation approaches rather than assuming that every country could immediately replace its entire salt supply. Switching only the salt used in household cooking and seasoning could prevent an estimated 1.85 million deaths annually. Replacing salt in processed foods and restaurant meals could prevent approximately 1.56 million deaths under a separate scenario. The estimates should not be added together because their health effects overlap; the combined global replacement model produces the overall projection of 2.96 million prevented deaths.
The distribution of potential benefits differs considerably between countries. The researchers estimate that a comprehensive transition could prevent approximately 1.08 million deaths annually in China and nearly 400,000 in India. The model also projects around 104,800 prevented deaths in the United States, 30,500 in Mexico and 13,000 in the United Kingdom. These differences reflect population size, existing dietary patterns and the burden of cardiovascular and kidney disease, rather than demonstrating that one national health system is inherently more effective than another.
The study highlights an important limitation of approaches focused exclusively on individual behavior. In Europe and North America, more than 70% of dietary salt consumption comes from processed foods and restaurant meals, according to the researchers. Consequently, changing the salt used in home kitchens would address only part of the problem. Meaningful population-wide reductions would require cooperation from food manufacturers, restaurants, public health authorities and regulators, along with clear product labeling and reliable supply chains.
Safety remains a critical consideration. Potassium-enriched salt can be dangerous for people whose kidneys cannot adequately eliminate potassium, particularly those with advanced kidney disease. Certain medications, including potassium-sparing diuretics and some treatments for hypertension or heart failure, can also increase the risk of hyperkalemia, a potentially serious elevation of potassium in the blood. Individuals with kidney problems or taking medications that affect potassium levels should consult a qualified healthcare professional before using these products. The alternative should not be presented as universally safe simply because it may benefit much of the adult population.
The WHO addressed these concerns in its January 2025 guideline on lower-sodium salt substitutes. It conditionally recommended potassium-containing alternatives for adults who choose to use table salt, while emphasizing that reducing overall sodium consumption remains the priority. The recommendation excludes people with kidney impairment or other conditions affecting potassium elimination and does not apply to children or pregnant women. It also concerns household table salt rather than automatically endorsing unrestricted substitution throughout commercially manufactured foods.
Implementing the proposed strategy worldwide would present industrial and regulatory challenges. Manufacturers would need sufficient potassium chloride supplies, appropriate quality controls and formulations that consumers find acceptable. Public health authorities would also need to consider affordability, iodine fortification and systems capable of identifying people at risk from excessive potassium intake. These requirements demonstrate why a promising nutritional intervention must be accompanied by effective healthcare infrastructure and responsible implementation.
The study does not suggest that changi