High blood pressure is one of the world’s biggest risk factors for cardiovascular diseases such as heart attack and stroke. One of the key drivers is excessive salt consumption. The WHO recommends limiting daily salt intake to a maximum of 5 g [1]. In reality, however, the global average intake is over 9–10 g per day [2]. This is where potassium chloride (KCl) comes in: It not only allows for a reduction in sodium in food, but also contributes to increased potassium absorption – a double benefit for heart health.
The health mechanism
High sodium and low potassium intake negatively affects the sodium-to-potassium ratio in the body – a key parameter for blood pressure regulation [3]. Several recent studies show that replacing sodium chloride with potassium chloride can lower blood pressure and reduce cardiovascular events [4].
A large-scale intervention study in China with over 20,000 participants demonstrated that a low-salt diet with 25% potassium chloride (KCl) reduced the incidence of strokes by 14% and cardiovascular mortality by 13% [4]. Therefore, potassium chloride is considered one of the most effective strategies in the prevention of hypertension.
National and international strategies
- Europe: Several countries promote voluntary reformulation programs. In the UK, KCl-based solutions are among the recommended reformulation strategies [6].
- WHO (2025): Official guidelines recommend the use of salt substitutes such as KCl as part of national prevention programs [1].
- FDA (USA): KCl is classified as GRAS (“Generally Recognized As Safe”) by the Food and Drug Administration and has been approved as a salt substitute in food standards since 2020 [5].
Consumer acceptance
Recent sensory studies show that potassium chloride is virtually indistinguishable from conventional salt in modern recipes. Even at higher substitution rates, consumers report high acceptance and comparable taste impressions [7]. Thus, potassium chloride is not only accepted as a substitute, but when used correctly, it can even contribute to taste differentiation and premiumization [8].
Conclusion
Potassium chloride is more than just a technical additive – it is a scientifically proven tool in the prevention of high blood pressure and cardiovascular disease. Manufacturers who rely on KCl not only contribute to public health but also position themselves as innovators in the food market.
literature
[1] WHO. Use of lower-sodium salt substitutes: WHO guideline. World Health Organization, 2025.
[2] Afshin, A. et al. (2021). Global sodium intake and cardiovascular burden. BMJ Global Health, 6(3), e004614.
[3] Huang, L. et al. (2020). The sodium-to-potassium ratio and its association with hypertension. Nutrients, 12(8), 2291.
[4] Neal, B. et al. (2021). Effect of Salt Substitution on Cardiovascular Events and Death. New England Journal of Medicine, 385(13), 1067-1077.
[5] US Food and Drug Administration (FDA). Action on Sodium and Use of Potassium Chloride as a Salt Substitute. 2020.
[6] Public Health England. Salt Reduction Targets 2020-2024: Progress Report. 2022.
[7] Jachimowicz-Rogowska, K. et al. (2023). Taste acceptability of potassium-enriched salt substitutes. Nutrients, 15(10), 2101.
[8] Fang, R. (2025). Advances in Reducing Salt Content in Processed Meats. Foods, 14(4), 755.