Eating too much salt is linked to a thicker heart muscle, more strokes, stiffer blood vessels, and tighter small arteries — all of which can hurt heart health.
Evidence Quality Assessment
Claim Status
overstated
Study Design Support
Design cannot support claim
Appropriate Language Strength
association
Can only show association/correlation
Assessment Explanation
The abstract uses causal-sounding verbs ('increases') without confirming study design. As a narrative review, it cannot establish direct causation. Verb strength must be downgraded to association.
More Accurate Statement
“High salt intake (6–12 g/day) is associated with higher left ventricular mass, increased stroke incidence, greater stiffness of conduit arteries, and elevated resistance artery activity compared to low salt intake (<3 g/day).”
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.
Evidence from Studies
Supporting (1)
Sodium and blood pressure
This study found that people who eat a lot of salt (6–12 grams a day) have bigger, stiffer hearts and blood vessels, and more strokes, compared to those who eat very little salt (under 3 grams). So yes, too much salt is bad for your heart and arteries.