Vitamin D and Atopic Dermatitis: A Systematic Review and Meta-Analysis

Abstract Objectives Despite the evidence supporting the use of vitamin D supplements for managing atopic dermatitis (AD), no meta-analysis providing definite conclusions in this field has been reported. The purpose of the current study was to conduct a systematic review and meta-analysis of all cont...

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Published in:Nutrition (Burbank, Los Angeles County, Calif.) Los Angeles County, Calif.), 2016-09, Vol.32 (9), p.913-920
Main Authors: Kim, Gaeun, Ph. D. R.N, Bae, Ji-Hyun, Ph. D
Format: Article
Language:English
Subjects:
Atopic dermatitis
Cell growth
Cytokines
Dermatitis
Dermatitis, Atopic - drug therapy
Dietary Supplements
Eczema
Food additives
Gastroenterology and Hepatology
Humans
Information services
Medical Subject Headings-MeSH
Meta-analysis
Peptides
SCORAD index
Studies
Systematic review
Vitamin D
Vitamin D - therapeutic use
Vitamin deficiency
Vitamins - therapeutic use
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Summary:Abstract Objectives Despite the evidence supporting the use of vitamin D supplements for managing atopic dermatitis (AD), no meta-analysis providing definite conclusions in this field has been reported. The purpose of the current study was to conduct a systematic review and meta-analysis of all controlled studies of vitamin D for treating AD to elucidate the efficacy of vitamin D for alleviating the symptoms of AD. Methods Literature searches were conducted using Ovid-MEDLINE, EMBASE, Web of Science, Cochrane Library, Korean databases, and Chinese database. Search terms used were: “vitamin D”, “atopic dermatitis”, “randomized”, “controlled trial”, and “clinical trial”. Random effects models were used to calculate the mean difference (MD), with 95% confidence intervals (CI) to analyze the effects of vitamin D supplementation for severity of AD. Results Initial searches yielded 266 citations. Of these original results, nine met specific selection criteria. Four of the randomized controlled trials (RCTs) compared the efficacy of vitamin D with a placebo on severity of AD and were included in the meta-analysis. The vitamin D supplementation interventions showed a higher mean difference in severity of AD symptoms (MD = -5.81, 95% CI: -9.03, -2.59, p = 0.0004, I2 = 50%). Conclusions Vitamin D has a potentially significant role for improving the symptoms of AD. The results from this study suggest that vitamin D supplementation may help ameliorate the severity of AD, and can be considered as a safe and tolerable therapy. However, larger-scale studies over a longer duration of treatment are needed to confirm this conclusion.
ISSN:0899-9007
1873-1244
DOI:10.1016/j.nut.2016.01.023