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5 X less COVID infection of health care workers who took lots of vitamin D – meta-analysis Feb 2024


Preventive Vitamin D Supplementation and Risk for COVID-19 Infection: A Systematic Review and Meta-Analysis

Nutrients 2024, 16(5), 679; https://doi.org/10.3390/nu16050679
Marina Sartini 1,2,*,†ORCID,Filippo Del Puente 3,*,†,Martino Oliva 1,Alessio Carbone 1,Nicoletta Bobbio 3,Elisa Schinca 1,2,Luana Giribone 1 and Maria Luisa Cristina 1,2
1 Department of Health Sciences, University of Genoa, 16132 Genoa, Italy
2 Operating Unit Hospital Hygiene, Galliera Hospital, 16128 Genoa, Italy
3 Department of Infectious Diseases, Galliera Hospital, 16128 Genoa, Italy

Over the past few decades, vitamin D has been found to play a crucial role in bone homeostasis, muscle function, oncogenesis, immune response and metabolism. In the context of the COVID-19 pandemic, numerous researchers have tried to determine the role vitamin D might play in the immune response to the virus. The aim of this systematic review and meta-analysis is to demonstrate that preventive vitamin D supplementation can play a protective role in the incidence of COVID-19, mortality and admission to intensive care units (ICUs). A comprehensive search on the PubMed/MEDLINE, Scopus, Cochrane and Google Scholar databases was performed on 15 May 2023, and two of the authors independently screened the literature. As effect measures, we calculated the Odds Ratios with their corresponding 95% confidence intervals (ICs). The assessment of potential bias and the evaluation of study quality will be conducted independently by two researchers. Sixteen publications were selected for inclusion in the meta-analysis. Our findings indicate that vitamin D supplementation has a protective effect against the incidence of COVID-19 in RCT studies (OR 0.403, 95% IC 0.218, 0.747), in the incidence of COVID-19 in analytical studies (OR = 0.592, 95% IC 0.476–0.736) and in ICU admission (OR 0.317, 95% IC 0.147–0.680). Subsequent analyses were conducted by type of subject treated (patient/healthcare workers) and type of supplementation (vitamin D vs. placebo/no treatment or high dose vs. low dose). Our meta-analysis suggests a definitive and significant association between the protective role of vitamin D and COVID-19 incidence and ICU admission.
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This study was reported on in a Dr. Campbell video March 13, 2024

YouTube 12 minutes

VitaminDWiki – COVID-19 treated by Vitamin D - studies, reports, videos

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VitaminDWiki - 44 studies in both Virus and Vitamin D intervention categories

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VitaminDwiki COVID infections and vaccinations decrease Vitamin D – many studies


Vaccination and/or Infection

Hypothesis: The body consumes Vitamin D each time the immune system is activated
The "GREEN" person started with a high level of Vitamin D
This assumes no vitamin D supplementation by supplements, sun, etc.

Attached files

ID Name Comment Uploaded Size Downloads
20875 HCW.png admin 28 Feb, 2024 77.57 Kb 113
20874 Supp D COVID meta_CompressPdf.pdf admin 28 Feb, 2024 376.81 Kb 32