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ORIGINAL ARTICLE

Exploring the relationship between serum vitamin D and shift work


1 Department of General Medicine, National Defense Medical Center, School of Medicine, Tri-Service General Hospital; Department of Family and Community Medicine, Division of Family Medicine, National Defense Medical Center, School of Medicine, Tri-Service General Hospital, Taipei, Taiwan
2 Department of Family and Community Medicine, Division of Family Medicine, National Defense Medical Center, School of Medicine, Tri-Service General Hospital; Department of Family and Community Medicine, Division of Geriatric Medicine, School of Medicine, National Defense Medical Center, Tri-Service General Hospital, Taipei, Taiwan
3 Department of Ophthalmology, National Defense Medical Center, School of Medicine, Tri-Service General Hospital, Taipei, Taiwan
4 Department of Neurology, National Defense Medical Center, Tri-Service General Hospital, Taipei, Taiwan
5 Department of Internal Medicine, Division of Endocrinology and Metabolism, National Defense Medical School, Tri-Service General Hospital, Taipei, Taiwan
6 Department of Family and Community Medicine, Division of Family Medicine, National Defense Medical Center, School of Medicine, Tri-Service General Hospital; Department of Family and Community Medicine, Division of Geriatric Medicine, School of Medicine, National Defense Medical Center, Tri-Service General Hospital; Department of Biochemistry, National Defense Medical Center, Taipei, Taiwan

Correspondence Address:
Wei-Liang Chen,
Number 325, Section 2, Chang.gong Rd, Nei.Hu District, 114, Taipei
Taiwan
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jmedsci.jmedsci_223_20

Background: Vitamin D deficiency became increasingly common worldwide and was related to various disorders. However, there was little information concerning the relationship between serum 25-hydroxyvitamin D (25(OH) D) level and shift work. The aim of this paper was to investigate the relation between serum 25(OH) D level and shift work in the American citizens. Methods: From the 2005–2006 NHANES, a total of 3025 participants were included. The relation between serum 25(OH) D level and shift work was investigated through the regression models. Results: There was an inverse relationship between serum 25(OH) D level and female shift worker in the fully adjusted models (β coefficient = -8.774, 95% confidence intervals [CI] = -16.83–-0.71, P = 0.03). Additionally, a negative correlation was presented between serum 25OHD level and Mexican American (β coefficient = -9.825, 95% CI = -19.31–-0.33, P = 0.04). No significant differences in serum 25(OH) D level were presented among indoor/outdoor works or manual/nonmanual works. However, long working hours (>40 h/week) were remarkably correlated with low serum 25(OH) D level (β coefficient = -8.007, 95% CI = -15.32–-0.68, P = 0.03). Conclusions: Our study concluded there was an inverse correlation between serum 25(OH) D level and shift work, especially in female population.


 

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