Blood Vitamin D Status and Metabolic Syndrome in the General Adult Population: A Dose-Response Meta-Analysis
- Authors
- Ju, Sang Yhun; Jeong, Hyun Suk; Kim, Do Hoon
- Issue Date
- 3월-2014
- Publisher
- ENDOCRINE SOC
- Citation
- JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM, v.99, no.3, pp.1053 - 1063
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM
- Volume
- 99
- Number
- 3
- Start Page
- 1053
- End Page
- 1063
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/99081
- DOI
- 10.1210/jc.2013-3577
- ISSN
- 0021-972X
- Abstract
- Context: Increasing evidence has suggested an association between blood vitamin D levels and metabolic syndrome. Objective: Our objective was to determine the relationship between blood vitamin D status and metabolic syndrome in the general adult population, using a dose-response meta-analysis. Data Source: We searched the PubMed, EMBASE, Web of Science, and Cochrane Library databases through July 2013 to identify relevant studies. Study Selection: Observational studies, reporting risk ratios with a 95% confidence interval (CI) for metabolic syndrome in >= 3 categories of blood 25-hydroxyvitamin D [25(OH) D] levels, were selected. Data Extraction: Data extraction was performed independently by 2 authors, and the quality of the studies was evaluated using the risk of bias assessment tool for nonrandomized studies. Data Synthesis: The pooled odds ratio of metabolic syndrome per 25 nmol/L increment in the serum/plasma 25(OH) D concentration was 0.87 (95% CI = 0.83-0.92, I-2 = 85%), based on 16 "cross-sectional studies" and 1.00 (95% CI = 0.98-1.02, I-2 = 0%) for 2 "cohort and nested case-control studies." The dose-response meta-analysis showed a generally linear, inverse relationship between 25(OH) D levels and metabolic syndrome in the cross-sectional studies (P for linear trend < .001). Conclusions: Blood vitamin D levels were associated with a risk of metabolic syndrome in cross-sectional studies but not in longitudinal studies. Randomized, clinical trials will be necessary to address the issue of causality and to determine whether vitamin D supplementation is effective for the prevention of metabolic syndrome.
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