High blood pressure affects millions of people and is a major cause of serious health problems. It often develops slowly and may not cause clear symptoms at first.
Over time, it can damage the heart, brain, and kidneys. Because of this, finding simple ways to control blood pressure is very important.
A new study presented at the American Heart Association’s Hypertension Scientific Sessions 2025 has revealed an unexpected problem. Even though salt substitutes are a simple and effective way to reduce sodium intake, very few people are using them.
Salt substitutes are designed to lower sodium consumption by replacing part of the salt with potassium. This change can help reduce blood pressure because potassium helps relax blood vessels and counteract the effects of sodium.
The study examined data from over 37,000 adults in the United States, collected through a long-term national health survey between 2003 and 2020. Researchers wanted to understand how many people were using salt substitutes and whether this changed over time.
The findings showed that usage has remained very low for nearly two decades. At most, only about one in twenty people used salt substitutes, and in recent years, the number has dropped even further.
This is important because diet plays a major role in blood pressure. Many people consume too much sodium, often without realizing it. Processed foods, packaged snacks, and restaurant meals are major sources of hidden salt. Even small reductions in daily sodium intake can lead to meaningful improvements in blood pressure.
The study also looked at people with high blood pressure and those who could safely use salt substitutes. Surprisingly, even in these groups, usage remained low. This suggests that awareness and education may be key barriers.
There are also safety considerations. Some salt substitutes contain potassium, which can be harmful for people with kidney problems or those taking certain medications. This means that people should speak with a healthcare professional before making changes.
Another factor may be taste preference. Some people may notice a slight difference when using salt substitutes, especially when cooking. Others may simply be used to regular salt and not willing to change their habits.
Experts say that increasing awareness about salt substitutes could have a big impact. Healthcare providers can play an important role by discussing this option with patients, especially those struggling to control their blood pressure.
When reviewing this study, it offers a clear picture of a missed opportunity in public health. The large dataset and long time span provide strong evidence that usage has not improved over time.
However, the study has some limitations. It relies on self-reported information, which may not always be accurate. It also does not capture detailed information about how much salt substitute people used or how consistently they used it.
Even with these limitations, the findings are important. They show that a simple and low-cost solution is being overlooked. Encouraging more people to consider salt substitutes, along with other healthy lifestyle changes, could help reduce the burden of high blood pressure.
This research highlights that sometimes the biggest improvements in health can come from small and practical changes that are easy to adopt in everyday life.
If you care about high blood pressure, please read studies that early time-restricted eating could help improve blood pressure, and natural coconut sugar could help reduce blood pressure and artery stiffness.
For more health information, please see recent studies about added sugar in your diet linked to higher blood pressure, and results showing vitamin D could improve blood pressure in people with diabetes.
Source: American Heart Association.
