Vitamin D Supplementation and Cognition in Adults: A Systematic Review of Randomized Controlled Trials.

Détails

ID Serval
serval:BIB_AB165A61689F
Type
Article: article d'un périodique ou d'un magazine.
Sous-type
Synthèse (review): revue aussi complète que possible des connaissances sur un sujet, rédigée à partir de l'analyse exhaustive des travaux publiés.
Collection
Publications
Institution
Titre
Vitamin D Supplementation and Cognition in Adults: A Systematic Review of Randomized Controlled Trials.
Périodique
CNS drugs
Auteur⸱e⸱s
Beauchet O., Cooper-Brown L.A., Allali G.
ISSN
1179-1934 (Electronic)
ISSN-L
1172-7047
Statut éditorial
Publié
Date de publication
12/2021
Peer-reviewed
Oui
Volume
35
Numéro
12
Pages
1249-1264
Langue
anglais
Notes
Publication types: Systematic Review
Publication Status: ppublish
Résumé
The role of vitamin D supplementation in improving cognition and slowing the incidence of minor and major neurocognitive disorders is a matter of debate. To our knowledge, no systematic review of randomized controlled trials (RCTs) has examined this question in adults.
The purpose of this systematic review is to synthesize the evidence regarding the effects of vitamin D supplementation on cognitive performance and neurocognitive disorders in adults.
A systematic search of scientific articles in English or French was conducted. The MEDLINE (PubMed), EMBASE (Ovid, EMBASE), PsychINFO, and Cochrane Central databases were searched for records without any limit on publication date in May 2021. Inclusion criteria were (1) human participants, (2) RCT, (3) participant age ≥ 18, (4) vitamin D supplementation as the intervention, and (5) cognition (i.e., cognitive performance or cognitive status such as cognitively healthy or minor and major neurocognitive disorder) as the primary outcome. Two independent reviewers both assessed all eligible studies' full texts and the risk of bias arising from methodological issues using a standardized procedure.
Of the 2137 abstracts identified, 61 (2.9%) met screening inclusion criteria. After full text examination, 41 records (67.2%) were excluded. As a result, 20 RCTs (32.8%) were included in the systematic review. The review yielded mixed findings and, thus, failed to find evidence supporting cognitive benefits from vitamin D supplementation or suggesting a causal association between vitamin D and cognitive function. Half of the RCTs reported mixed results, one quarter negative results, and the last quarter positive effects for vitamin D supplementation on cognitive performance. The variability in serum 25-dihydroxyvitamin D concentration thresholds, the cognitive tests employed, the supplementation doses, and the samples' characteristics (i.e., ethnicity or number of participants) may explain these mixed findings.
This systematic review of RCTs does not support a role for vitamin D supplementation in enhancing cognition in adults.
Pubmed
Web of science
Création de la notice
03/12/2021 18:56
Dernière modification de la notice
02/10/2023 6:58
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