Potassium supplements in salt have been found to have a significant impact on reducing rates of recurrent stroke and mortality, according to a recent study conducted in rural northern China. The study, a subgroup analysis within the Salt Substitute and Stroke Study (SSaSS), focused on stroke patients and revealed promising results for this population.
Stroke is a leading cause of death and disability in low- and middle-income countries, with high rates of recurrence being a major concern. In northern China, where sodium intake is high and potassium intake is low, the risk of stroke is particularly elevated. Recurrence rates in China exceed global averages, with 17% of patients experiencing a recurrent stroke within one year and 41% within five years.
The SSaSS trial, which involved 600 villages and nearly 21,000 individuals in rural China, replaced participants’ salt with a substitute containing 75% salt and 25% potassium chloride. The recent study, published in JAMA Cardiology, analyzed data from 15,249 participants who had previously suffered from stroke.
Results showed that recurrent stroke was 14% lower in the group receiving the potassium-enriched salt substitute compared to the control group. Mean systolic blood pressure was also lower in the salt substitute group, and there was a significant reduction in both hemorrhagic stroke and stroke-related deaths. Importantly, there was no notable increase in the risk of hyperkalemia, a potential concern with potassium supplementation.
The findings suggest that replacing salt with a 25% potassium substitute is a safe and cost-effective dietary intervention that can significantly reduce the risk of recurrent stroke and mortality among stroke survivors. Researchers recommend the broader implementation of salt substitutes, particularly in regions with high sodium intake and limited access to preventive healthcare.
In conclusion, the study highlights the potential benefits of potassium-enriched salt in reducing the burden of stroke recurrence and mortality, offering a simple yet impactful intervention for at-risk populations. Further research and implementation efforts are needed to explore the full potential of this approach in improving stroke outcomes globally.
