Why the study?
Does altering dietary salt intake change plasma sodium and blood pressure in hypertensive and normotensive individuals?
Population
Hypertensive and normotensive individuals from 3 types of studies
Comparison
Alterations in dietary salt intake vs Usual or baseline salt intake
Design
Review, Randomized crossover, Double-blind
Follow-up
Up to 1 month
Authors
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Supports plasma sodium as a mediator of salt-BP effects; hypothesis-generating and should not yet change practice.
Does altering dietary salt intake change plasma sodium and blood pressure in hypertensive and normotensive individuals?
Changes in dietary salt intake directly alter plasma sodium levels, which correlates with changes in systolic blood pressure.
He et al. (2004) studied this question.