A Meta-Analysis of Effect of Dietary Salt Restriction on Blood Pressure in Chinese Adults
Why the study?
Do dietary salt reduction strategies lower blood pressure in Chinese adults?
Structured PICO
Do dietary salt reduction strategies lower blood pressure in Chinese adults?
P
Population
8,598 Chinese adults (hypertensive and normotensive) across 14 studies (6 salt-restriction experiment studies with 3,153 participants, 4 cooking salt-restriction spoon studies with 3,715 participants, and 4 cooking salt-substitute studies with 1,730 participants)
I
Intervention
Dietary salt reduction strategies (including salt-restriction experiments, salt-restriction spoons, and salt substitutes)
C
Comparator
Before dietary salt lowering (baseline)
O
Outcome
Blood pressure (systolic BP), 24-h urinary sodium excretion, and salt (sodium chloride) intakesurrogate
Dietary salt restriction, including the use of salt substitutes and salt-restriction spoons, significantly lowers systolic blood pressure in Chinese adults, particularly among those with hypertension.
Limitations
- Most studies aggregated results for hypertensive and normotensive participants
- Lack of adjustment for medication use
Authors
Discussion
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Implication
Supports salt reduction strategies for BP control in hypertensive Chinese adults; extends evidence to this high-intake population.
Cite This Study
Wang et al. (2015) studied this question.