The Impact of Vitamin D Supplementation on Improving Blood Pressure: Evidence Obtained From an Umbrella Meta-analysis.
Study Goal
The researchers aimed to resolve conflicting meta-analysis results regarding the effect of vitamin D on blood pressure by conducting an umbrella meta-analysis.
Results Summary
The study found that vitamin D significantly reduced systolic blood pressure based on weighted mean difference analysis, suggesting it could be an efficient adjuvant for improving blood pressure.
Population
Not specified (meta-analysis of clinical trials).
Effective Dosage
Not specified.
Duration
Not specified.
Interactions
None mentioned.
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
vitamin D | decrease | systolic blood pressure | - | -1.37 mmHg | significantly reduced | #1 |
vitamin D | decrease | diastolic blood pressure | - | -0.36 mmHg | significantly reduced | #2 |
vitamin D | decrease | blood pressure | - | - | could be considered an efficient adjuvant for improving | #3 |
PURPOSE: The results of meta-analyses regarding the effect of vitamin D on blood pressure are conflicting. The present umbrella meta-analysis was conducted to provide definite and conclusive results. METHODS: Systematically, Scopus, EMBASE, PubMed, and Web of Science databases and Google Scholar were searched for relevant literature published up to July 2022. All meta-analyses of clinical trials addressing the effect of vitamin D on blood pressure were included. Random effects analysis was performed to obtain the overall effect size based on the standardized mean differences (SMDs) and weighted mean differences (WMDs) separately. The quality of included meta-analyses was assessed by using the Measurement Tool for Assessing Multiple Systematic Reviews 2 questionnaire. FINDINGS: Overall, 21 meta-analyses were enrolled in the umbrella review. The results indicated that systolic blood pressure was significantly reduced after the intervention based on WMD effect size analysis (ES IMPLICATIONS: Based on obtained evidence, vitamin D could be considered an efficient adjuvant for improving blood pressure.