Can Vitamin D Protect You During this Coronavirus Pandemic?

Can vitamin D help against COVID-19? Several publications and studies have suggested that maintaining adequate levels of vitamin D would seem potentially beneficial in fighting the COVID-19 infection.

supplements and immune system

We have searched through electronic databases which included PubMed.gov and ClinicalTrials.gov in order to compile and organize the relevant information related to vitamin D and COVID-19.

Vitamin D and COVID-19: The Evidence

A preprinted study published in June 2020 from Singapore (CW Tan, MedRxiv 2020), among 43 patients age 50 or older who were hospitalised with COVID-19, found that those who were started on a daily oral dose of vitamin D3 (1,000 IU), magnesium (150 mg) and vitamin B12 (500 mcg) within the first day of hospitalisation and continued up to 14 days were significantly less likely to require oxygen therapy and further intensive care.

According to an editorial review (Aliment Pharmacol Ther. 2020) published in June 2020 by Irish researchers, people with vitamin D deficiency appear to be far more prone to severe COVID-19 infections.

The epidemiology of COVID-19 provides evidence that vitamin D might be helpful in reducing risk associated with COVID-19 deaths. A May 6, 2020, report published in Aging Clinical and Experimental Research (its prepublication featured in the Daily Mail) found that countries with lower vitamin D levels also have higher mortality rates from COVID-19.

Another May 6, 2020 report (Nutrients. 2020) in the journal Nutrients pointed out that vitamin D concentrations are lower in patients with positive PCR (polymerase chain reaction) tests for SARS-CoV-2. As noted in this report, which retrospectively investigated the vitamin D levels obtained from a cohort of patients in Switzerland.

The Irish Longitudinal Study on Ageing (TILDA) published in April 2020, suggested that vitamin D deficiency could have serious implications for COVID-19. Results from the Irish Longitudinal Study on Ageing (TILDA), showed that vitamin D plays a critical role in preventing respiratory infections, reducing antibiotic use, and boosting the immune system response to infections.

Another study, published in the journal Nutrients (April 2, 2020), carries the telling title, "Evidence That Vitamin D Supplementation Could Reduce Risk of Influenza and COVID-19 Infections and Death."

Mark Alipio with GrassrootsHealth conducted a retrospective multicenter study involving 212 patients in Southeast Asia who had COVID-19. He too found a strong correlation between vitamin D levels and disease severity. Those with the mildest disease had the highest vitamin D levels, and vice versa.

A preprinted study published in May 2020, looked at Vitamin D levels and inflammatory markers in hospitalized COVID-19 patients in Germany, South Korea (S. Korea), China (Hubei), Switzerland, Iran, UK, US, France, Spain, Italy (Daneshkhah, MedRxiv 2020). Patients with the lowest Vitamin D levels were about 15% more likely to get severe COVID-19 and cytokine storm. Vitamin D3 plays a role in inhibiting the cytokine storm that causes viral infections to become lethal.

In a May 18, 2020, letter to the Federal Chancellor of Germany, Angela Merkel; Bernd Glauner and Lorenz Borsche highlight these and other studies and ask whether a nationwide supply of vitamin D has been considered in Germany.

While large controlled studies demonstrating vitamin D's effectiveness in COVID-19 are still lacking, there are many such studies underway. You can review the status of these trials on clinicaltrials.gov. As of July 2020, 20 studies have been launched to investigate the benefits of vitamin D against COVID-19.

Buy Online: You can purchase Vitamin D as a dietary supplement online and from local health stores in Malaysia i.e. Guardian and Watson.

Do take note that you can also get good amounts of vitamins C and D, zinc, and other essential vitamins and minerals from a basic multivitamin.

Wrap-up

Do we have large randomised controlled trials to prove that vitamin D can combat COVID-19. Not at the moment.

Of course, the most important thing you can do to avoid infection with coronavirus is to prevent exposure by following the latest recommendations of the CDC and World Health Organization such as wearing face mask, social distancing and hand sanitisation. Also take steps to stay healthy, including getting adequate sleep and exercise and eating a healthful diet that includes adequate (but not excessive) intakes of essential nutrients, such as vitamins C and D.

For those with hypertension, please take steps to control your blood pressure as high blood pressure is associated with more severe outcome if infected.

Your own immune system, works best when fed right. As long as you are taking supplements under medical supervision and within a safe range, the risk is low but the potential benefit is high? What have you got to lose?

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