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Protective effect through vitamin D? Prevention of vitamin D deficiency – treatment practice

Does Vitamin D Protect Against Coronavirus?

Whether vitamin D can protect against KOVID-19 disease is still controversial. The following article summarizes previous findings on the protective effect of vitamin D on coronavirus.

Vitamin D deficiency is widespread

In winter, in particular, many people suffer from vitamin D deficiency, because normally vitamin D is mainly formed by the sun’s rays on the skin, and the lack of sunlight in winter can easily lead to deficiency. In addition, the so-called ability of the skin to synthesize vitamin D, unfortunately, decreases with age, which favors vitamin D deficiency in the elderly.

Get vitamin D through your diet

In addition to sunlight, the diet you eat is an important source of vitamin D. Some high-fat foods, such as salmon, tuna, and liver, contain vitamin D. There are also special foods fortified with vitamin D. These include, for example, margarine, mushrooms and chandeliers. However, only a small percentage of the daily requirement for vitamin D is covered by food.

Free distribution of vitamin D supplements?

In England, health authorities plan to distribute vitamin D supplements free of charge to more than 2.5 million vulnerable people this winter. These are mostly people in nursing homes. This year is more important than ever for people to take vitamin D because most people spend less time outdoors. Therefore, the government decided to give vitamin D to clinically extremely vulnerable people, explains Dr. Alison Tedston from Public Health England told the BBC news channel.

Vitamin D protects muscles and bones

Vitamin D is especially important for bones and muscles, but it also has a preventive effect against respiratory infections. If there is a deficiency, it may make sense to take vitamin D supplements. In this context, however, the Robert Koch Institute (RKI) warns of overdose. This can, for example, lead to nausea and even serious problems with the kidneys, heart and circulation.

KOVID-19: Sick people are often deficient in vitamin D.

As early as April 2020, a study showed that people suffering from KOVID-19 are often deficient in vitamin D. Another study from the University of Cantabria in Santander found that 82.2 percent of people with KOVID-19 suffer from vitamin D deficiency. In the control group of people without coronavirus disease, however, the value was only 47.2 percent.

Possible causes of increased risk

Researchers say that people with vitamin D deficiency have a higher prevalence of high blood pressure and cardiovascular disease. In addition, affected people would have elevated serum ferritin and troponin levels and longer hospital stays than people with 25OHD levels ≥20 ng / mL.

However, researchers at the University of Cantabria also said they found no link between vitamin D concentrations or vitamin deficiency and the severity of the disease.

Impact of Vitamin D on Respiratory Infections?

Vitamin D is known to be good for bones, so it is often prescribed to prevent osteopenia, a precursor to osteoporosis. Studies conducted exclusively on children in Asia have shown that vitamin D can also modulate certain immune functions in respiratory infections.

This may suggest a link between vitamin D and KOVID-19. However, experts say it is too early to say that vitamin D protects against KOVID-19. At this point, some research groups around the world have found that people with vitamin D deficiency are more likely to get COVID-19. However, this is not convincing evidence of a causal link.

Results of further investigations

Another study found that children with KOVID-19, on average, had lower levels of vitamin D than the control group of healthy children. However, no chronically ill children participated in the study. The results, however, suggest that vitamin D levels may be associated with the occurrence of KOVID-19.

Serious disease KOVID-19 favored by vitamin D deficiency?

Researchers from the German University of Hohenheim analyzed the results of 30 studies dealing with KOVID-19 and vitamin D. The risk of severe KOVID-19 disease with lower vitamin D levels has been found to be higher than in people with normal vitamin D levels.

However, researchers point out that pre-existing vitamin D deficiency is often associated with various other pre-existing conditions, which in turn may affect the risk of KOVID-19. (as)

Information about the author and the source

This text is in accordance with the requirements of the specialist medical literature, medical guidelines and current studies and is verified by medical professionals.


  • BBC: Covid: Free vitamin D pills for 2.5 million vulnerable in England (ver воffentlicht 30.11.2020), BBC
  • Robert Koch Institute: Answers from the Robert Koch Institute Frequently Asked Questions About Vitamin D (as of January 25, 2019), ERC
  • Ali Daneshah, Vasundara Agraval, Adam Eshein, Hariharan Subramanian, Hemant K. Roy, Vadim Buckman: The possible role of vitamin D in suppressing cytokine storm and associated mortality in patients with KOVID-19, in medRxiv (veröffentlicht 30.04.2020), medRxiv
  • Jose L. Hernandez, Daniel Nann, Marta Fernandez-Ayala, Maite Garcia-Unzueta, Miguel A. Hernandez-Hernandez et al .: Vitamin D status in hospitalized patients with SARS-CoV-2 infection, in the journal Clinical and Clinical veröffentlicht 27.10 .2020), ЈЦЕМ
  • Kamil Yilmaz, Velat Shen: Is Vitamin D Deficiency a Risk Factor for KOVID – 19 in Children?
  • Hans K. Biesalski: Vitamin D Deficiency and Concomitant Diseases in Patients with KOVID-19 – Fatal Relationship ?, in NFS Journal (veröffentlicht Volume 20, August August, Pages 10-21), NFS Journal

Important note:
This article is for general guidance only and should not be used for self-diagnosis or self-treatment. He can not replace a visit to the doctor.

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