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Association of Serum Levels of Vitamin D with Blood Pressure Status in Northern Iranian Population: The PERSIAN Guilan Cohort Study (PGCS)

Authors Joukar F, Naghipour M, Hassanipour S, Salari A, Alizadeh A, Saeidi-Saedi H, Mansour-Ghanaei F

Received 1 January 2020

Accepted for publication 20 February 2020

Published 11 March 2020 Volume 2020:13 Pages 99—104

DOI https://doi.org/10.2147/IJGM.S244472

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 2

Editor who approved publication: Dr Scott Fraser


Farahnaz Joukar,1,2,* Mohammadreza Naghipour,1,* Soheil Hassanipour,1,2 Arsalan Salari,3 Ahmad Alizadeh,4 Hamid Saeidi-Saedi,2 Fariborz Mansour-Ghanaei1,2,4 

1Gastrointestinal and Liver Diseases Research Center, Guilan University of Medical Sciences, Rasht, Iran; 2GI Cancer Screening and Prevention Research Center, Guilan University of Medical Sciences, Rasht, Iran; 3Department of Cardiology, Cardiovascular Diseases Research Center, Heshmat Hospital, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran; 4Caspian Digestive Disease Research Center, Guilan University of Medical Sciences, Rasht, Iran

*These authors contributed equally to this work

Correspondence: Fariborz Mansour-Ghanaei
Gastrointestinal and Liver Diseases Research Center, Guilan University of Medical Sciences, Razi Hospital, Sardar-Jangle Ave., P.O. Box: 41448-95655, Rasht, Iran
Tel +98-1315535116
Fax +98-1315534951
Email fmansourghanaei@gmail.com

Background: Evidence in the last decades has indicated an association between vitamin D and cardiovascular risk factors including blood pressure. The present study aimed to determine whether serum 25-hydroxyvitamin D is independently associated with blood pressure in a large population-based study.
Methods: The study was based on subjects from PERSIAN Guilan Cohort Study (PGCS), a prospective, population-based cohort study in Guilan, Iran. In 9520 men and women, aged 35– 70 years, serum 25-hydroxyvitamin D, systolic and diastolic blood pressure were measured. Multiple logistic and linear regression analyses were conducted with adjustments for demographic factors (age and gender), anthropometric characteristics (waist circumference and body mass index), lifestyle variables (physical activity, alcohol, and smoking consumption), and renal function (serum creatinine).
Results: Fully adjusted linear regression analyses revealed a weak but statistically significant negative association between serum 25-hydroxyvitamin D levels and systolic blood pressure (β = – 0.02, 95% CI= − 0.052 to − 0.0001, P-value=0.04), whereas vitamin D status was not significantly associated with diastolic blood pressure (β = – 0.01, 95% CI= − 0.026 to 0.009, P-value=0.3). Serum 25-hydroxyvitamin D status showed no significant association with the presence of hypertension (OR 1.09, 95% CI=0.94 to 1.25 for the lowest (25OHD < 12 ng/mL) versus the highest (25OHD ≥ 20 ng/mL) category).
Conclusion: Lower serum vitamin 25 (OH) D levels were associated with higher systolic blood pressure; however, it was not associated with diastolic blood pressure and presence of hypertension.

Keywords: vitamin D, blood pressure, Guilan cohort study, Iran

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