The Association between Serum 25(OH)D Status and Blood Pressure in Participants of a Community-Based Program Taking Vitamin D Supplements
- PMID: 29135923
- PMCID: PMC5707716
- DOI: 10.3390/nu9111244
The Association between Serum 25(OH)D Status and Blood Pressure in Participants of a Community-Based Program Taking Vitamin D Supplements
Abstract
Background: Vitamin D deficiency is a risk factor for hypertension.
Methods: We assessed 8155 participants in a community-based program to investigate the association between serum 25-hydroxyvitamin D (25(OH)D) status and blood pressure (BP) and the influence of vitamin D supplementation on hypertension. Participants were provided vitamin D supplements to reach a target serum 25(OH)D > 100 nmol/L. A nested case-control study was conducted to examine the effect of achieving physiological vitamin D status in those who were hypertensive and not taking BP-lowering medication, and hypertensive participants that initiated BP-lowering medication after program entry.
Results: At baseline, 592 participants (7.3%) were hypertensive; of those, 71% were no longer hypertensive at follow-up (12 ± 3 months later). There was a significant negative association between BP and serum 25(OH)D level (systolic BP: coefficient = -0.07, p < 0.001; diastolic BP: coefficient = -0.1, p < 0.001). Reduced mean systolic (-18 vs. -14 mmHg) and diastolic (-12 vs. -12 mmHg) BP, pulse pressure (-5 vs. -1 mmHg) and mean arterial pressure (-14 vs. -13 mmHg) were not significantly different between hypertensive participants who did and did not take BP-lowering medication.
Conclusion: Improved serum 25(OH)D concentrations in hypertensive individuals who were vitamin D insufficient were associated with improved control of systolic and diastolic BP.
Keywords: 25-hydroxyvitamin D; blood pressure; hypertension; medication; vitamin D supplement.
Conflict of interest statement
The author’s declare no conflict of interest. Samantha Kimball and Naghmeh Mirhosseini are employed by the Pure North S’Energy Foundation. This affiliation does not alter authors’ adherence to all Nutrients policies on sharing data and materials.
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