Meta-analysis of vitamin D supplementation and hemoglobin concentration: methodological faults obscure the interpretation of the data

Meta-analysis of vitamin D supplementation and hemoglobin concentration: methodological faults obscure the interpretation of the data

Abstract We read the review by Arabi et al. with great interest which tried to examine the effects of vitamin D supplementation on hemoglobin concentration. It seems that the article suffers from fundamental methodological issues and the conclusions are likely to be erroneous. In this regard, we wou...

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Bibliographic Details
Main Authors: Alireza Zimorovat, Mohsen Mohammadi-Sartang, Reza Barati-Boldaji, Hamidreza Raeisi-Dehkordi
Format: Article
Language:English
Published: BMC 2021-03-01
Series:Nutrition Journal
Subjects:
Vitamin D
Hemoglobin
Iron status
Anemia
Letter to the editor
Online Access:https://doi.org/10.1186/s12937-021-00681-w
Description
Summary:Abstract We read the review by Arabi et al. with great interest which tried to examine the effects of vitamin D supplementation on hemoglobin concentration. It seems that the article suffers from fundamental methodological issues and the conclusions are likely to be erroneous. In this regard, we would like to ask the authors to address the mentioned limitations and to update the analysis in order to provide robust and trustful results. We are concerned that such meta-analyses may lead to the biased findings and conclusions.
ISSN:1475-2891

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