ReviewEndocrine practice : official journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists2021
Vitamin D and Its Potential Benefit for the COVID-19 Pandemic.
Review in Endocrine practice : official journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 6 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
40 citing papers in PubMed, 6 syntheses or guidelines pooled it, 81 citations in OpenAlex.
- Effect of the vitamin D supplementation on clinical outcomes and inflammatory status in COVID-19 patients: an umbrella review.BMC nutrition · 2025Pooled it
- Vitamin D Deficiency Meets Hill's Criteria for Causation in SARS-CoV-2 Susceptibility, Complications, and Mortality: A Systematic Review.Nutrients · 2025Pooled it
- Hospital and laboratory outcomes of patients with COVID-19 who received vitamin D supplementation: a systematic review and meta-analysis of randomized controlled trials.Naunyn-Schmiedeberg's archives of pharmacology · 2023Pooled it
- The effect of vitamin D supplementation on mortality and intensive care unit admission of COVID-19 patients. A systematic review, meta-analysis and meta-regression.Diabetes/metabolism research and reviews · 2022Pooled it
- Vitamin D and SARS-CoV2 infection, severity and mortality: A systematic review and meta-analysis.PloS one · 2022Pooled it
- Vitamin D Status and SARS-CoV-2 Infection and COVID-19 Clinical Outcomes.Frontiers in public health · 2021Pooled it
- High-dose vitamin DRespiratory research · 2024Trial
- Evidence for the Efficacy of a High Dose of Vitamin D on the Hyperinflammation State in Moderate-to-Severe COVID-19 Patients: A Randomized Clinical Trial.Medicina (Kaunas, Lithuania) · 2022Trial
- Serum vitamin D levels in patients with lung metastases.Biomedical papers of the Medical Faculty of the University Palacky, Olomouc, Czechoslovakia · 2026Article
- The Modulatory Role of Vitamin D in the Molecular Mechanisms of Sepsis and Infections with Focus on Viral Pathogenesis: A Narrative Review.Pathogens (Basel, Switzerland) · 2026Review
- Analysis of chemiluminescence and liquid chromatography-mass spectrometry in 25-hydroxyvitamin D detection using fuzzy logic.Scientific reports · 2026Article
- Vitamin B12 and D status in long-term vegetarians: Impact of diet duration and subtypes in Beijing, China.Asia Pacific journal of clinical nutrition · 2026Article
- Comparative Analysis of a Rapid Quantitative Immunoassay to the Reference Methodology for the Measurement of Blood Vitamin D Levels.Methods and protocols · 2025Article
- Herbal and Dietary Supplements as Adjunctive Treatment for Mild SARS-CoV-2 Infection in Italy.Nutrients · 2025Review
- Long-term effects of COVID-19 infection on bone mineral density.Journal of global health · 2024Article
- Exploring the Interplay of Food Security, Safety, and Psychological Wellness in the COVID-19 Era: Managing Strategies for Resilience and Adaptation.Foods (Basel, Switzerland) · 2024Review
- Highly selective whole-cell 25-hydroxyvitamin DMicrobial cell factories · 2024Article
- The impact of vitamin D, vitamin C, and zinc supplements on immune status among Jordanian adults during COVID-19: cross-sectional study findings.BMC public health · 2023Article
- Calcifediol: Mechanisms of Action.Nutrients · 2023Review
- Intervention Approaches in Studying the Response to Vitamin DNutrients · 2023Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors at 2 institutions in 2 countries.
Funding
Abstract
Vitamin D is known not only for its importance for bone health but also for its biologic activities on many other organ systems. This is due to the presence of the vitamin D receptor in various types of cells and tissues, including the skin, skeletal muscle, adipose tissue, endocrine pancreas, immune cells, and blood vessels. Experimental studies have shown that vitamin D exerts several actions that are thought to be protective against coronavirus disease (COVID-19) infectivity and severity. These include the immunomodulatory effects on the innate and adaptive immune systems, the regulatory effects on the renin-angiotensin-aldosterone-system in the kidneys and the lungs, and the protective effects against endothelial dysfunction and thrombosis. Prior to the COVID-19 pandemic, studies have shown that vitamin D supplementation is beneficial in protecting against risk of acquiring acute respiratory viral infection and may improve outcomes in sepsis and critically ill patients. There are a growing number of data connecting COVID-19 infectivity and severity with vitamin D status, suggesting a potential benefit of vitamin D supplementation for primary prevention or as an adjunctive treatment of COVID-19. Although the results from most ongoing randomized clinical trials aiming to prove the benefit of vitamin D supplementation for these purposes are still pending, there is no downside to increasing vitamin D intake and having sensible sunlight exposure to maintain serum 25-hydroxyvitamin D at a level of least 30 ng/mL (75 nmol/L) and preferably 40 to 60 ng/mL (100-150 nmol/L) to minimize the risk of COVID-19 infection and its severity.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.