The Claim
Body mass index mediates the effect of sodium intake on systolic blood pressure in U.S. adults aged 60 years and younger, with a stronger mediating effect in this age group compared to older adults.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
In U.S. adults aged 60 and younger, higher body weight increases the extent to which sodium intake raises blood pressure.
See the scientific wording
The indirect effect of sodium intake on systolic blood pressure through body mass index is primarily observed in U.S. adults aged 60 years and younger, suggesting that adiposity may play a more prominent role in mediating sodium's effect on blood pressure in younger and middle-aged populations.
Extra body fat makes the blood vessels tighten and the kidneys hold onto more salt and water when salt intake is high, which raises blood pressure more in younger adults than in older adults.
What the research says
1 studyIn people under 60, being overweight seems to make salt raise blood pressure more than it does in older people. The study found that extra weight explains more of the blood pressure rise from salt in younger adults than in seniors.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.