The Study
Heterogeneity of blood pressure response to dietary sodium restriction in normotensive adults.
This study looked at a group of people with normal blood pressure and noticed that older people might react differently to eating less salt. But we don’t know how they picked the people or if they did it fairly — so we can’t say salt definitely causes changes in blood pressure, just that there might be a link.
Analysis score
Maximum 44 for a cross-sectional study.
Where the score came from
When people eat less salt, their blood pressure changes—but not everyone the same way. Older people tend to have bigger changes, and even healthy people might see unexpected effects.
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 520 / 100
Quality score
Snapshots of a population at a single point in time, or descriptions of small groups. Can identify correlations and prevalence, but cannot determine cause and effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes—this suggests cutting salt for everyone might not be harmless, especially as people age.
- 2Not specified
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Journal of chronic diseases
Year
1987
Authors
J. Z. Miller, M. Weinberger, S. Daugherty, N. Fineberg, J. Christian, C. Grim
Related Content
Claims (3)
Cutting down on salt can lower your blood pressure, and the more salt you cut, the more your blood pressure drops—especially if it was already high to begin with.
As people get older, their blood pressure tends to react more wildly when they eat less salt—meaning older folks might be more sensitive to how much salt they consume.
Cutting back on salt might seem healthy, but for some people who don’t have high blood pressure, it could accidentally raise or lower their blood pressure in ways that aren’t good.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.