The Study
Salt Substitution and Recurrent Stroke and Death: A Randomized Clinical Trial.
This study is like a fair test where people with past strokes were randomly given either a special salt or regular salt. The ones with the special salt had fewer strokes and lived longer — so we think the special salt helped. But we can’t say for sure it’s the only reason, because everyone knew which salt they got.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
People who had a stroke before were given a special salt with less sodium and more potassium instead of normal salt.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 568 / 100
Quality score
Participants are randomly assigned to treatment or control groups, minimizing bias. The gold standard for testing whether an intervention causes an effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes — for every 100 people with prior stroke, this salt swap could prevent about 1–2 strokes and 1 death over 5 years.
- 2They had 14% fewer strokes, 12% fewer deaths, 30% fewer deadly brain bleeds, and slightly lower blood pressure — and didn't get dangerous potassium levels.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
JAMA cardiology
Year
2025
Authors
Xiong Ding, Xinyi Zhang, Liping Huang, Shangzhi Xiong, Zhifang Li, Yi Zhao, Bo Zhou, Xuejun Yin, Bingqing Xu, Yanfeng Wu, Bruce Neal, M. Tian, Lijing L. Yan
Related Content
Claims (4)
If you swap out regular table salt for a special salt that has less sodium and more potassium, it might help you have fewer strokes, heart problems, and even live longer — plus it could gently lower your blood pressure.
If you've had a stroke before, switching from normal salt to a special salt that has less sodium and more potassium might lower your blood pressure by about 2 points — not a lot, but maybe helpful.
If you've had a stroke before, switching to a special salt that has less sodium and more potassium might help keep you from having another stroke or dying from one — and it doesn’t seem to cause dangerous potassium buildup in your blood.
For people who’ve had a stroke before, using a special salt that has less sodium and more potassium doesn’t raise their risk of having too much potassium in their blood — the numbers show it’s basically the same as regular salt.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.