Repository of Research and Investigative Information

Repository of Research and Investigative Information

Baqiyatallah University of Medical Sciences

Effect of Vitamin D Supplementation on the Regulation of Blood Pressure in Iranian Patients with Essential Hypertension: A Clinical Trial

(2021) Effect of Vitamin D Supplementation on the Regulation of Blood Pressure in Iranian Patients with Essential Hypertension: A Clinical Trial. Adv Exp Med Biol. pp. 501-511. ISSN 0065-2598 (Print) 0065-2598

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Abstract

BACKGROUND: Low serum vitamin D level is associated with both high blood pressure and incidence of primary hypertension. Experimental studies suggest that vitamin D supplements may reduce blood pressure. OBJECTIVE: The aim of this study was to investigate whether vitamin D supplementation reduces systolic blood pressure (SBP), diastolic blood pressure (DBP), and mean arterial pressure (MAP) in Iranian patients with essential hypertension. METHOD: A total of 173 patients with essential hypertension participated in this open-label clinical trial. SBP, DBP, and serum vitamin D levels were measured at baseline and at the end of the study. Vitamin D was administered at a dose of 50,000 IU/week, and 1000 IU/day in patients with serum vitamin D levels <20 ng/mL and 20-30 ng/mL, respectively, for 8 weeks. RESULTS: Based on serum vitamin D levels, 45.1, 17.3, and 29.5 of patients were deficient, insufficient, and sufficient for vitamin D intake, respectively. Baseline serum levels of vitamin D were not correlated with SBP, DBP, and MAP at the beginning of the study (p = ns). Multiple logistic regression analysis revealed that the risk of vitamin D deficiency was 2.5-fold times higher in women than in men (p = 0.03). After 8 weeks of supplementation with vitamin D, mean SBP and MAP were significantly reduced by 5.5 ± 16.16 (p = 0.01) and 3.7 ± 9.24 (p = 0.004) mmHg, respectively. Neither sex nor age could significantly predict BP response to vitamin D supplementation. CONCLUSION: Vitamin D supplementation may significantly reduce SBP and MAP but not DBP in patients with essential hypertension.

Item Type: Article
Keywords: Blood Pressure Dietary Supplements Essential Hypertension Female Humans *Hypertension/drug therapy Iran/epidemiology Male *Vitamin D Dbp Map Sbp Vitamin D
Page Range: pp. 501-511
Journal or Publication Title: Adv Exp Med Biol
Journal Index: Pubmed
Volume: 1328
Identification Number: https://doi.org/10.1007/978-3-030-73234-9₃₅
ISSN: 0065-2598 (Print) 0065-2598
Depositing User: مهندس مهدی شریفی
URI: http://eprints.bmsu.ac.ir/id/eprint/9479

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