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find Author "XU Xinjuan" 1 results
  • Effects of Vitamin D Supplement on Blood Pressure: A Systematic Review

    Objective To systematically review the impact of vitamin D supplement on blood pressure, so as to provide a basis for clinical treatment. Methods Such databases as The Cochrane Library (Issue 8, 2011), MEDLINE (1996 to August 2011), EMbase (1974 to August 2011), CBM (1989 to 2011), CNKI (1997 to August 2011) and VIP (1989 to 2011) were searched to collect the randomized controlled trials (RCTs) about the impact of vitamin D supplement on blood pressure. Two reviewers independently screened the literature according to the inclusion criteria, extracted the data and assessed the quality. Then the meta-analysis was performed using RevMan 5.0 software. Results A total of 8 studies involving 907 participants were included. The methodological quality based on the improved Jadad scales displayed that, 7 studies scored 4 to 7 and only 1 study scored less than 4. The results of meta-analysis showed that compared with the placebo groups, vitamin D supplement had no significant difference in both systolic and diastolic blood pressure. Conclusion Based on current research evidences, compared with placebo, vitamin D supplement has no marked impact on either systolic or diastolic blood pressure. Due to the lack of studies, this conclusion still needs to be proved by conducting more well designed, large sample, and multicenter RCTs.

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