U.S. Survey Shows Salt Substitutes Underused by Individuals with High Blood Pressure

Recent research presented at the American Heart Association's Hypertension Scientific Sessions 2025 highlights that the adoption of salt substitutes among Americans with high blood pressure remains remarkably low. Despite the fact that these products are a simple, cost-effective way to reduce sodium intake and help manage blood pressure, fewer than 6% of U.S. adults report using them.

High blood pressure, a leading risk factor for heart attack and stroke, affects nearly half of American adults, with over 122 million individuals diagnosed between 2017 and 2020. Excessive sodium consumption and inadequate potassium intake are major contributors to this condition.

Salt substitutes typically replace some or all of the sodium with potassium, which can help lower blood pressure. However, their usage is limited, even among those who could benefit most. Data from the National Health and Nutrition Examination Survey (NHANES) spanning 2003 to 2020 reveal that usage peaked at 5.4% around 2013–2014 but dropped to just 2.5% by early 2020. Among people with high blood pressure, especially those on medication or with uncontrolled conditions, usage remained under 11%, and overall, salt substitutes were mostly underutilized.

The study emphasized that many individuals with high blood pressure continue to rely on regular salt, missing an easy opportunity to better control their condition. Health care professionals are encouraged to discuss salt substitutes with their patients, especially those with persistent hypertension.

Some individuals should be cautious with potassium-based salt substitutes, particularly those with kidney disease or taking medications affecting potassium levels, as excess potassium can cause dangerous irregular heart rhythms. Therefore, consulting a healthcare provider before making the switch is essential.

This research underscores the need for increased awareness and education about the benefits and safe use of salt substitutes. Future efforts should focus on understanding barriers such as taste preferences, cost, and limited awareness that hinder their adoption.

Study details include a diverse sample of over 37,000 adults, categorized by blood pressure status and medication use. The findings suggest that while salt substitutes are affordable and effective, their use remains surprisingly low, presenting an important public health opportunity to improve cardiovascular health across the U.S.

Source: https://medicalxpress.com/news/2025-09-survey-salt-substitutes-rarely-people.html