Cochrane · systematic review · CD004022

Effects of low sodium diet versus high sodium diet on blood pressure, renin, aldosterone, catecholamines, cholesterol, and triglyceride

Graudal, NA, Hubeck-Graudal, T, Jurgens, G · Cochrane Database of Systematic Reviews · 2020 · Cochrane Library

Hypertension2 versionsAMSTAR 2: not assessed
SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
20
current version
GRADE rated
20
No studies
0
Included studies
NR
No studies 0 · 0%Ungraded 0 · 0%Very low 0 · 0%Low 6 · 30%Moderate 3 · 15%High 11 · 55%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

Questions and results

Show all 2 versions

Summary of findings: Low sodium intake compared with high sodium intake for blood pressure in white participants

Population: White population with normal or elevated blood pressure, but otherwise healthy
4 questions
OutcomeEffectEvidenceStatus / GRADE
White population, normotensive, SBP mmHg
Summary of findings: Low sodium intake vs high sodium intake
no estimate extracted95 studies · 5982 participantsHigh
White population, normotensive, DBP mmHg
Summary of findings: Low sodium intake vs high sodium intake
no estimate extracted96 studies · 6276 participantsHigh
White population, hypertensive, SBP mmHg
Summary of findings: Low sodium intake vs high sodium intake
no estimate extracted88 studies · 3998 participantsHigh
White population, hypertensive, DBP mmHg
Summary of findings: Low sodium intake vs high sodium intake
no estimate extracted89 studies · 4032 participantsHigh

Summary of findings: Low sodium intake compared with high sodium intake for blood pressure in black participants

Population: Black population with normal or elevated blood pressure, but otherwise healthy
4 questions
OutcomeEffectEvidenceStatus / GRADE
Black population, normotensive, SBP mmHg
Summary of findings: Low sodium intake vs high sodium intake
no estimate extracted7 studies · 253 participantsLow
Downgraded: imprecision, inconsistency
Black population, normotensive, DBP mmHg
Summary of findings: Low sodium intake vs high sodium intake
no estimate extracted7 studies · 253 participantsLow
Downgraded: imprecision, inconsistency
Black population, hypertensive, SBP mmHg
Summary of findings: Low sodium intake vs high sodium intake
no estimate extracted8 studies · 398 participantsLow
Downgraded: imprecision, inconsistency
Black population, hypertensive, DBP mmHg
Summary of findings: Low sodium intake vs high sodium intake
no estimate extracted8 studies · 398 participantsLow
Downgraded: imprecision, inconsistency

Summary of findings: Low sodium intake compared with high sodium intake for blood pressure in Asian participants

Population: Asian population with normal or elevated blood pressure, but otherwise healthy
4 questions
OutcomeEffectEvidenceStatus / GRADE
Asian population, normotensive, SBP mmHg
Summary of findings: Low sodium intake vs high sodium intake
no estimate extracted5 studies · 950 participantsModerate
Downgraded: imprecision, inconsistency
Asian population, normotensive, DBP mmHg
Summary of findings: Low sodium intake vs high sodium intake
no estimate extracted5 studies · 950 participantsModerate
Downgraded: imprecision, inconsistency
Asian population, hypertensive, SBP mmHg
Summary of findings: Low sodium intake vs high sodium intake
no estimate extracted8 studies · 254 participantsLow
Downgraded: imprecision, inconsistency
Asian population, hypertensive, DBP mmHg
Summary of findings: Low sodium intake vs high sodium intake
no estimate extracted8 studies · 254 participantsLow
Downgraded: imprecision, inconsistency

Summary of findings: Low sodium intake compared with high sodium intake for hormones

Population: Participants with normal or elevated blood pressure, but otherwise healthy
4 questions
OutcomeEffectEvidenceStatus / GRADE
Renin ng/ml/hour
Summary of findings: Low sodium intake vs high sodium intake
no estimate extracted91 studies · 2904 participantsHigh
Aldosterone pg/mL
Summary of findings: Low sodium intake vs high sodium intake
no estimate extracted70 studies · 2506 participantsHigh
Noradrenaline pg/mL
Summary of findings: Low sodium intake vs high sodium intake
no estimate extracted38 studies · 878 participantsHigh
Adrenaline pg/mL
Summary of findings: Low sodium intake vs high sodium intake
no estimate extracted16 studies · 331 participantsModerate
Downgraded: imprecision

Summary of findings: Low sodium intake compared with high sodium intake for lipids

Population: Participants with normal or elevated blood pressure, but otherwise healthy
4 questions
OutcomeEffectEvidenceStatus / GRADE
Cholesterol mg/dL
Summary of findings: Low sodium intake vs high sodium intake
no estimate extracted28 studies · 917 participantsHigh
Trigyceride mg/dL
Summary of findings: Low sodium intake vs high sodium intake
no estimate extracted20 studies · 712 participantsHigh
High‐density lipoprotein (HDL) mg/dL
Summary of findings: Low sodium intake vs high sodium intake
no estimate extracted20 studies · 738 participantsHigh
Low‐density lipoprotein (LDL) mg/dL
Summary of findings: Low sodium intake vs high sodium intake
no estimate extracted18 studies · 696 participantsHigh