The Study
The blood pressure sensitivity to changes in sodium intake is similar in Asians, Blacks and Whites. An analysis of 92 randomized controlled trials
This study looked at lots of experiments where people ate less salt and saw if their blood pressure dropped. It found that, on average, salt reduction lowers blood pressure about the same in Asians, Blacks, and Whites — but the differences are tiny and might be because of things like income or lifestyle, not race.
Analysis score
Maximum 100 for a systematic review with meta-analysis.
Where the score came from
Scientists looked at many studies where people ate less salt to see if some groups, like Asians, Blacks, or Whites, had bigger drops in blood pressure — and found they all dropped about the same.
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 559 / 100
Quality score
The highest quality evidence. Systematic reviews and meta-analyses that pool randomized controlled trials, giving the most reliable summary of experimental evidence.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes — a 4 mmHg drop is clinically meaningful and reduces heart disease risk, regardless of ethnicity.
- 2Salt reduction lowered blood pressure by about 4 mmHg systolic and 2 mmHg diastolic in all groups.
- 3Blacks had a tiny extra 1.5 mmHg drop in diastolic pressure — but only in some analyses, not all.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Frontiers in Physiology
Year
2015
Authors
N. Graudal, G. Jürgens
Related Content
Claims (6)
Cutting back on salt can lower your blood pressure a little bit—about 3 to 5 points for the top number and 1 to 3 points for the bottom number—and this works the same way whether you're Asian, Black, or White, as long as you start with similar blood pressure and salt intake.
It’s not your race that affects how your blood pressure reacts to eating less salt—it’s more about your income, education, and living conditions. When scientists account for those social factors, differences between racial groups mostly go away.
When people cut down on salt, Black individuals tend to see a tiny bit more drop in their bottom blood pressure number than White individuals—about 1.5 points—but this difference is so small and inconsistent that it doesn’t always show up in studies.
If you compare Asians and White people who start with the same blood pressure and eat the same amount of salt, cutting back on salt lowers blood pressure about the same amount in both groups—even though Asians usually eat more salt and are older on average.
In the same study, people from different ethnic backgrounds didn’t respond differently to eating less salt when it came to blood pressure — so the differences we’ve seen before might be because studies were done differently, not because of biology.
Some groups of people, depending on their ancestry or where they’re from, have bodies that react differently to salt—some get a bigger spike in blood pressure when they eat salty food, and that’s because of differences in their genes.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.