Vitamin D and COVID-19: An overview of recent evidence

Drishti Ghelani, Simon Alesi, Aya Mousa

Research output: Contribution to journalReview ArticleResearchpeer-review

30 Citations (Scopus)


The novel coronavirus severe acute respiratory syndrome (SARS-CoV-2) has progressed rapidly from an outbreak to a global pandemic, with new variants rapidly emerging. Coronavirus disease 2019 (COVID-19), the disease resulting from SARS-CoV-2 infection, can lead to multiorgan damage. Due to the extremely contagious and fatal nature of the virus, it has been a priority of medical research to find effective means of treatment. Amid this search, the role of vitamin D in modulating various aspects of the innate and adaptive immune system has been discussed. This review aims to consolidate the research surrounding the role of vitamin D in the treatment and prevention of COVID-19. While there are some conflicting results reported, the consensus is that vitamin D has a host of immunomodulatory effects which may be beneficial in the context of COVID-19 and that low levels of vitamin D can result in dysfunction of crucial antimicrobial effects, potentially contributing to poor prognosis. Studies also show that the effects of low vitamin D can be mitigated via supplementation, although the benefits of vitamin D supplementation in the treatment of COVID-19 remain controversial.

Original languageEnglish
Article number10559
Number of pages19
JournalInternational Journal of Molecular Sciences
Issue number19
Publication statusPublished - 1 Oct 2021


  • Coronavirus
  • COVID-19
  • Immunity
  • Infection
  • Review
  • SARS-CoV-2
  • Vitamin D

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