Vitamin D supplementation for the treatment of COVID-19: A systematic review and meta-analysis of randomized controlled trials

Vitamin D supplementation and its impact on immunoregulation are widely investigated. We aimed to assess the prevention and treatment efficiency of vitamin D supplementation in the context of coronavirus disease 2019 (COVID-19) and any disease-related complications. For this systematic review and me...

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Main Authors: Lara S. Kümmel, Hanna Krumbein, Paraskevi C. Fragkou, Ben L. Hünerbein, Rieke Reiter, Konstantinos A. Papathanasiou, Clemens Thölken, Scott T. Weiss, Harald Renz, Chrysanthi Skevaki
Format: Article
Language:English
Published: Frontiers Media S.A. 2022-10-01
Series:Frontiers in Immunology
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Online Access:https://www.frontiersin.org/articles/10.3389/fimmu.2022.1023903/full
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author Lara S. Kümmel
Hanna Krumbein
Paraskevi C. Fragkou
Ben L. Hünerbein
Rieke Reiter
Konstantinos A. Papathanasiou
Clemens Thölken
Scott T. Weiss
Harald Renz
Chrysanthi Skevaki
author_facet Lara S. Kümmel
Hanna Krumbein
Paraskevi C. Fragkou
Ben L. Hünerbein
Rieke Reiter
Konstantinos A. Papathanasiou
Clemens Thölken
Scott T. Weiss
Harald Renz
Chrysanthi Skevaki
author_sort Lara S. Kümmel
collection DOAJ
description Vitamin D supplementation and its impact on immunoregulation are widely investigated. We aimed to assess the prevention and treatment efficiency of vitamin D supplementation in the context of coronavirus disease 2019 (COVID-19) and any disease-related complications. For this systematic review and meta-analysis, we searched databases (PubMed, Embase, Scopus, Web of Science, The Cochrane Library, medRxiv, Cochrane COVID-19 Study Register, and ClinicalTrial.gov) for studies published between 1 November 2019 and 17 September 2021. We considered randomized trials (RCTs) as potentially eligible when patients were tested for SARS-CoV-2 infection and received vitamin D supplementation versus a placebo or standard-of-care control. A random-effects model was implemented to obtain pooled odds ratios for the effect of vitamin D supplementation on the main outcome of mortality as well as clinical outcomes. We identified a total of 5,733 articles, of which eight RCTs (657 patients) met the eligibility criteria. Although no statistically significant effects were reached, the use of vitamin D supplementation showed a trend for reduced mortality [odds ratio (OR) 0.74, 95% confidence interval (CI) 0.32–1.71, p = 0.48] compared with the control group, with even stronger effects, when vitamin D was administered repeatedly (OR 0.33, 95% CI 0.1–1.14). The mean difference for the length of hospitalization was −0.28 (95% CI −0.60 to 0.04), and the ORs were 0.41 (95% CI 0.15–1.12) and 0.52 (95% CI 0.27–1.02) for ICU admission and mechanical ventilation, respectively. In conclusion, vitamin D supplementation did not improve the clinical outcomes in COVID-19 patients, but trends of beneficial effects were observed. Further investigations are required, especially studies focusing on the daily administration of vitamin D.
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spelling doaj.art-fad40390dd1b46d4a276d690f4e165d62022-12-22T03:22:32ZengFrontiers Media S.A.Frontiers in Immunology1664-32242022-10-011310.3389/fimmu.2022.10239031023903Vitamin D supplementation for the treatment of COVID-19: A systematic review and meta-analysis of randomized controlled trialsLara S. Kümmel0Hanna Krumbein1Paraskevi C. Fragkou2Ben L. Hünerbein3Rieke Reiter4Konstantinos A. Papathanasiou5Clemens Thölken6Scott T. Weiss7Harald Renz8Chrysanthi Skevaki9Institute of Laboratory Medicine, Universities of Giessen and Marburg Lung Center (UKGMLC), Philipps Universität Marburg, German Center for Lung Research/ Deutsches Zentrum für Lungenforschung (DZL) Marburg, Marburg, GermanyInstitute of Laboratory Medicine, Universities of Giessen and Marburg Lung Center (UKGMLC), Philipps Universität Marburg, German Center for Lung Research/ Deutsches Zentrum für Lungenforschung (DZL) Marburg, Marburg, GermanyFirst Department of Critical Care Medicine and Pulmonary Services, Evangelismos Hospital, Medical School of Athens, National and Kapodistrian University of Athens, Athens, GreeceInstitute of Laboratory Medicine, Universities of Giessen and Marburg Lung Center (UKGMLC), Philipps Universität Marburg, German Center for Lung Research/ Deutsches Zentrum für Lungenforschung (DZL) Marburg, Marburg, GermanyInstitute of Laboratory Medicine, Universities of Giessen and Marburg Lung Center (UKGMLC), Philipps Universität Marburg, German Center for Lung Research/ Deutsches Zentrum für Lungenforschung (DZL) Marburg, Marburg, GermanyMedical School, National and Kapodistrian University of Athens, Athens, GreeceInstitute of Medical Bioinformatics and Biostatistics, Medical Faculty, Philipps University of Marburg, Marburg, GermanyChanning Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United StatesInstitute of Laboratory Medicine, Universities of Giessen and Marburg Lung Center (UKGMLC), Philipps Universität Marburg, German Center for Lung Research/ Deutsches Zentrum für Lungenforschung (DZL) Marburg, Marburg, GermanyInstitute of Laboratory Medicine, Universities of Giessen and Marburg Lung Center (UKGMLC), Philipps Universität Marburg, German Center for Lung Research/ Deutsches Zentrum für Lungenforschung (DZL) Marburg, Marburg, GermanyVitamin D supplementation and its impact on immunoregulation are widely investigated. We aimed to assess the prevention and treatment efficiency of vitamin D supplementation in the context of coronavirus disease 2019 (COVID-19) and any disease-related complications. For this systematic review and meta-analysis, we searched databases (PubMed, Embase, Scopus, Web of Science, The Cochrane Library, medRxiv, Cochrane COVID-19 Study Register, and ClinicalTrial.gov) for studies published between 1 November 2019 and 17 September 2021. We considered randomized trials (RCTs) as potentially eligible when patients were tested for SARS-CoV-2 infection and received vitamin D supplementation versus a placebo or standard-of-care control. A random-effects model was implemented to obtain pooled odds ratios for the effect of vitamin D supplementation on the main outcome of mortality as well as clinical outcomes. We identified a total of 5,733 articles, of which eight RCTs (657 patients) met the eligibility criteria. Although no statistically significant effects were reached, the use of vitamin D supplementation showed a trend for reduced mortality [odds ratio (OR) 0.74, 95% confidence interval (CI) 0.32–1.71, p = 0.48] compared with the control group, with even stronger effects, when vitamin D was administered repeatedly (OR 0.33, 95% CI 0.1–1.14). The mean difference for the length of hospitalization was −0.28 (95% CI −0.60 to 0.04), and the ORs were 0.41 (95% CI 0.15–1.12) and 0.52 (95% CI 0.27–1.02) for ICU admission and mechanical ventilation, respectively. In conclusion, vitamin D supplementation did not improve the clinical outcomes in COVID-19 patients, but trends of beneficial effects were observed. Further investigations are required, especially studies focusing on the daily administration of vitamin D.https://www.frontiersin.org/articles/10.3389/fimmu.2022.1023903/fullvitamin DSARS-CoV-2COVID-19systematic reviewmeta-analysis
spellingShingle Lara S. Kümmel
Hanna Krumbein
Paraskevi C. Fragkou
Ben L. Hünerbein
Rieke Reiter
Konstantinos A. Papathanasiou
Clemens Thölken
Scott T. Weiss
Harald Renz
Chrysanthi Skevaki
Vitamin D supplementation for the treatment of COVID-19: A systematic review and meta-analysis of randomized controlled trials
Frontiers in Immunology
vitamin D
SARS-CoV-2
COVID-19
systematic review
meta-analysis
title Vitamin D supplementation for the treatment of COVID-19: A systematic review and meta-analysis of randomized controlled trials
title_full Vitamin D supplementation for the treatment of COVID-19: A systematic review and meta-analysis of randomized controlled trials
title_fullStr Vitamin D supplementation for the treatment of COVID-19: A systematic review and meta-analysis of randomized controlled trials
title_full_unstemmed Vitamin D supplementation for the treatment of COVID-19: A systematic review and meta-analysis of randomized controlled trials
title_short Vitamin D supplementation for the treatment of COVID-19: A systematic review and meta-analysis of randomized controlled trials
title_sort vitamin d supplementation for the treatment of covid 19 a systematic review and meta analysis of randomized controlled trials
topic vitamin D
SARS-CoV-2
COVID-19
systematic review
meta-analysis
url https://www.frontiersin.org/articles/10.3389/fimmu.2022.1023903/full
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