Serum Vitamin D Levels in Relation to Schizophrenia: A Systematic Review and Meta-Analysis of Observational Studies

2014 ◽  
Vol 99 (10) ◽  
pp. 3863-3872 ◽  
Author(s):  
Ghazaleh Valipour ◽  
Parvane Saneei ◽  
Ahmad Esmaillzadeh
Keyword(s):  
Systematic Review ◽  
Vitamin D ◽  
Observational Studies ◽  
Meta Analysis ◽  
Serum Vitamin ◽  
Serum Vitamin D ◽  
Vitamin D Levels

scholarly journals Body Mass Index, Vitamin D, and Type 2 Diabetes: A Systematic Review and Meta-Analysis

Nutrients ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 1182 ◽  
Author(s):  
Shamaila Rafiq ◽  
Per Jeppesen
Keyword(s):  
Systematic Review ◽  
Body Mass Index ◽  
Vitamin D ◽  
Body Mass ◽  
Observational Studies ◽  
Meta Analysis ◽  
Serum Vitamin ◽  
Vitamin D Supplementation ◽  
Serum Vitamin D ◽  
Vitamin D Levels

The deficiency of vitamin D is prevalent all over the world. Studies have shown that vitamin D may play an important role in the development of obesity. The current study was conducted to quantitatively evaluate the association between serum 25-(OH) vitamin D levels and the risk of obesity in both diabetic and non-diabetic subjects. A systematic review and meta-analysis of observational studies was carried out for that purpose. We searched the Medline, PubMed, and Embase databases throughout all of March 2018. A total of fifty five observational studies for both diabetic and non-diabetic subjects were finally included in the meta-analysis. The data were analyzed by comprehensive meta-analysis software version 3 and the random effects model was used to analyze the data. The meta-analysis showed an overall inverse relationship between serum vitamin D status and body mass index (BMI) in studies of both diabetic (r = −0.173, 95% = −0.241 to −0.103, p = 0.000) and non-diabetic (r = −0.152, 95% = −0.187 to −0.116, p = 0.000) subjects. The evidence of publication bias was not found in this meta-analysis. In conclusion, the deficiency of vitamin D is associated with an increased level of BMI in the studies of both diabetic and non-diabetic subjects. Reliable evidence from well-designed future randomized controlled trials is required to confirm the findings from observational studies and to find out the potential regulatory effects of vitamin D supplementation to lower BMI.

scholarly journals Vitamin D intake, serum Vitamin D levels, and risk of gastric cancer: A systematic review and meta-analysis

2015 ◽  
Vol 20 (8) ◽  
pp. 790 ◽  
Author(s):  
Ahmad Esmaillzadeh ◽  
Saeid Khayatzadeh ◽  
Awat Feizi ◽  
Parvane Saneei
Keyword(s):  
Gastric Cancer ◽  
Systematic Review ◽  
Vitamin D ◽  
Meta Analysis ◽  
Serum Vitamin ◽  
Serum Vitamin D ◽  
Vitamin D Intake ◽  
Vitamin D Levels

scholarly journals Serum Vitamin D Levels and Polycystic Ovary syndrome: A Systematic Review and Meta-Analysis

Nutrients ◽  
2015 ◽  
Vol 7 (6) ◽  
pp. 4555-4577 ◽  
Author(s):  
Chunla He ◽  
Zhoumeng Lin ◽  
Sara Robb ◽  
Amara Ezeamama
Keyword(s):  
Systematic Review ◽  
Vitamin D ◽  
Polycystic Ovary Syndrome ◽  
Polycystic Ovary ◽  
Meta Analysis ◽  
Serum Vitamin ◽  
Ovary Syndrome ◽  
Serum Vitamin D ◽  
Vitamin D Levels
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