The sunshine vitamin and COVID-19

Vitamin D, the sunshine vitamin, is one of the most important vitamins for good health, with proven benefits in preventing and treating COVID-19 and other respiratory illnesses.

The INTERNATIONAL ALLIANCE STUDY1 coordinated by Australia’s National Institute of Integrative Medicine (NIIM), completed Stage 1 in August 2021, provides significant insight into the role Vitamin D supplements can take in the ongoing health response to the COVID-19 global pandemic, adding to an international body of research.
Vitamin D deficiency is shown to be is a high risk factor for severe COVID-19 disease and hospitalisation. 

The results of the study show:

  • 97% of hospitalised patients testing positive to COVID-19 were Vitamin D deficient, 55% were severely Vitamin D deficient.2
  • None of the 237 hospitalised patients in the study had optimal Vitamin D levels.
  • Low Vitamin D correlated to increased prevalence of ICU admittance, and longer hospital stays.

Vitamin D Deficiency is a known risk factor for respiratory illness, and medical professionals are calling for Vitamin D protocols to be adopted for optimal health.3

This international research, funded in Australia, provides people with additional and timely tools in the response to COVID-19.11



  2. Vitamin D deficiency is defined by Vitamin D blood levels of less than 50 nmol/L, severe Vitamin D deficiency is less than 25 nmol/L. Optimal Vitamin D levels are those over 75nmol/L.
  3. Brighthope I, Sali A, RiedK: Vitamin-D and COVID-19: Time for the profession to take a stand.
    Adv Integr Med 2021 May;8(2):77-78.