High blood pressure is one of the biggest risk factors for heart disease, stroke and kidney disease.
Millions of people consume more salt than health experts recommend, and this extra sodium raises blood pressure in many individuals.
Because of this, researchers have spent years looking for safer alternatives to ordinary table salt that can help protect the heart without making food taste bland.
One of the most promising options is potassium-enriched salt, often called a salt substitute. Instead of being made entirely from sodium chloride, these products replace part of the sodium with potassium chloride. The result is a seasoning that tastes similar to regular salt but contains less sodium and more potassium.
Large clinical studies have shown that reducing sodium while increasing potassium can lower blood pressure. Potassium helps the body remove excess sodium through the kidneys and relaxes blood vessel walls, making it easier for blood to flow. These effects can reduce strain on the heart and blood vessels over time.
One of the strongest pieces of evidence comes from the Salt Substitute and Stroke Study (SSaSS), which followed thousands of older adults in China who had a history of stroke or poorly controlled high blood pressure.
Participants who used a potassium-enriched salt substitute had fewer strokes, fewer major cardiovascular events and fewer deaths than those using regular salt. Importantly, the study did not find an increase in serious problems related to high potassium in the overall study population.
Research from systematic reviews and meta-analyses has reached similar conclusions. Combining the results of many clinical trials shows that replacing regular salt with potassium-enriched salt generally lowers blood pressure in adults, especially those with hypertension.
The greatest benefits are usually seen when the salt substitute is used as part of an overall healthy eating pattern.
Scientists also emphasise that simply switching salt is not enough. A diet rich in vegetables, fruit, legumes, whole grains, nuts and low-fat dairy products naturally provides more potassium and other nutrients that support healthy blood pressure. Eating fewer highly processed foods also helps because these foods often contain large amounts of hidden sodium.
The DASH eating pattern and the Mediterranean diet are both supported by strong research evidence. These diets encourage fresh foods, healthy fats and moderate amounts of salt while limiting processed foods, sugary drinks and excessive saturated fat. They consistently lower blood pressure and reduce the risk of heart disease.
Although potassium-enriched salt is beneficial for many people, it is not suitable for everyone. People with advanced kidney disease, severe kidney impairment or certain medical conditions may not be able to remove extra potassium from the body.
Some medicines, including certain blood pressure drugs, can also increase potassium levels. These individuals should speak with their doctor before using a salt substitute.
Many people worry that potassium-enriched salt tastes very different. Research suggests that most people quickly adapt to the flavour, particularly when the replacement is introduced gradually. Using herbs, spices, garlic, lemon juice and vinegar can also enhance flavour while reducing the need for extra salt.
Public health experts believe that replacing regular salt with potassium-enriched salt could become an important strategy for reducing the global burden of cardiovascular disease. Even small reductions in blood pressure across large populations can prevent many heart attacks and strokes each year.
Current evidence does not support taking potassium supplements simply to lower blood pressure unless recommended by a healthcare professional. Foods naturally rich in potassium and potassium-enriched salt are generally preferred because they provide balanced nutrition and are supported by stronger evidence.
Overall, research shows that potassium-enriched salt is one of the best salt substitutes currently available for most healthy adults who need to reduce sodium intake.
When combined with healthy eating, regular exercise, maintaining a healthy weight, avoiding smoking and taking prescribed medicines when needed, it can become part of a practical plan to protect long-term heart and blood vessel health.
If you care about high blood pressure, please read studies about breakfast for better blood pressure management, and the gut feeling that lowers blood pressure.
For more health information, please see recent studies about how the dash diet helps lower blood pressure, and how to eat your way to healthy blood pressure.
Copyright © 2026 Knowridge Science Report. All rights reserved.
