Vitamin D3 · SARS-CoV-2
Vitamin D3 Explainer
How SARS-CoV-2 disrupts vitamin D signaling and fuels IL-6 inflammation
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Vitamin D3 and SARS-CoV-2. This explainer looks at vitamin D3 in the setting of SARS-CoV-2: the virus can impair vitamin D receptor signaling and drive IL-6 inflammation. A normal supply still starts with UVB in daylight — vitamin D is fat-soluble — not with tablets as COVID treatment.
Vitamin D3 · SARS-CoV-2
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Answers come from AI (Grok), not from the person who shared this app. Lena covers vitamin D3, SARS-CoV-2 and long COVID. This is not medical advice.
Sources
Open the studies
New papers on vitamin D3, SARS-CoV-2 and long COVID are marked New with their date. Click a title to open it.
- This paper
Lee et al. (2021)
13 Sept 2021
Virus-induced senescence is a driver and therapeutic target in COVID-19
Nature
SARS-CoV-2 evokes cellular senescence (VIS). SASP, macrophage activation, secondary endothelial senescence. Senolytics helped in hamster and mouse models — not a clinic protocol here.
Open in PubMed
- Mechanism
Meyer, Patra, Ray et al. (2021)
10 Aug 2021
SARS-CoV-2 spike protein induces paracrine senescence and leukocyte adhesion in endothelial cells
Journal of Virology
Spike-conditioned medium senesces endothelium (p16, p21, SA-β-Gal) and raises adhesion molecules. IL-6 trans-signalling inhibitors blocked part of that loop in vitro.
Open paper
- Mechanism
Lian, Palioura et al. (2021)
26 Feb 2021
Age-dependent effects of the recombinant spike protein/SARS-CoV-2 on M-CSF- and IL-34-differentiated macrophages
Biochemical and Biophysical Research Communications
Recombinant spike upregulates SASP-related cytokines in mouse M-CSF macrophages; IL-34 macrophages responded differently. Age and sex mattered in vitro.
Open paper
- This paperNew
Valdés-López et al. (2026)
11 Sept 2026
SARS-CoV-2 infection induces functional impairment of vitamin D receptor signaling to drive interleukin 6-dependent hyperinflammation in mononuclear phagocytes
PLOS One
The paper this video explains. Dual-hit: NF-κB/IL-6 up, VDR down; calcitriol cuts IL-6 in a cell-line model.
Open in PubMed
- Clinical trial
Kodama et al. (2026)
3 Feb 2026
Vitamin D in myalgic encephalomyelitis/chronic fatigue syndrome after COVID-19 or vaccination: a randomized controlled trial
Nutrients
Open-label RCT in vitamin D–insufficient ME/CFS after COVID or vaccination. Replacement guidance reduced symptom count vs control — not a COVID cure.
Open in PubMed
- Clinical trial
Ganmaa, Manson et al. (2026)
1 Apr 2026
A randomized trial of vitamin D supplementation and COVID-19 clinical outcomes and long COVID: the VIVID trial
The Journal of Nutrition
Large RCT: high-dose D3 did not reduce acute healthcare use vs placebo. Long COVID signal at 8 weeks needs more study.
Open paper
- Clinical trial
Atieh et al. (2025)
16 Jan 2025
Vitamins K2 and D3 improve long COVID, fungal translocation, and inflammation: randomized controlled trial
Nutrients
K2 plus D3 vs standard care for 24 weeks. Some long-COVID index and inflammation markers improved. Combined vitamins, not D3 alone.
Open in PubMed
- Mechanism
Ahmed et al. (2024)
15 May 2024
Vitamin D regulates COVID-19 associated severity by suppressing the NLRP3 inflammasome pathway
PLOS One
Calcitriol lowers NLRP3, IL-1β and IL-6 in patients and in spike-stimulated immune cells.
Open in PubMed
- Mechanism
Junqueira et al. (2022)
6 Apr 2022
FcγR-mediated SARS-CoV-2 infection of monocytes activates inflammation
Nature
Monocytes can take up the virus and pyroptose — a source of the inflammatory fire this paper studies.
Open in PubMed
- Mechanism
Kvedaraite et al. (2021)
21 Jan 2021
Major alterations in the mononuclear phagocyte landscape associated with COVID-19 severity
PNAS
Maps how monocytes and dendritic cells shift in moderate vs severe disease.
Open in PubMed
- Mechanism
Valdés-López et al. (2022)
3 May 2022
Vitamin D modulates Toll-like receptors and pro-inflammatory cytokines without affecting Chikungunya virus replication
Acta Tropica
Earlier work from the same Medellín group on vitamin D in monocytes and macrophages.
Open in PubMed
- Review
Huang et al. (2025)
17 Jan 2025
A narrative review focusing on randomized clinical trials of vitamin D supplementation for COVID-19
Frontiers in Nutrition
Deficiency tracks with worse COVID; supplementation trial results remain mixed.
Open in PubMed
- Review
Qayyum et al. (2021)
21 Oct 2021
Lung-centric inflammation of COVID-19: potential modulation by vitamin D
Nutrients
How VDR signaling can restrain NF-κB and inflammasomes in the lung.
Open paper