Therapeutic and prognostic role of vitamin D for COVID-19 infection: A systematic review and meta-analysis of 43 observational studies

  • Vitamin D modulates the systemic inflammatory response through interaction with immune system.
  • We systematically reviewed studies about vitamin D3 and risk and mortality for COVID-19 infection.
  • Reduced vitamin D values resulted in a higher infection risk, mortality and severity COVID-19 infection.

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