Vitamin D, Healthy Immune Function and Covid-19

As scientists are learning more about effective prevention and

treatment of Sars2 coronavirus, or Covid-19, new research is emerging regarding the potential benefits of Vitamin D.

Vitamin D is a fat-soluble vitamin that promotes cellular function and bone health.  Besides being a vitamin, however, Vitamin D actually is also a hormone that plays a role in cellular behavior. As a steroid hormone, it can enter into the cell nucleus, and change the way the cells behave. As an important regulator of human immune function, vitamin D may stimulate innate immune responses which provide front-line protection against infectious agents. It acts as an essential immunomodulator. 

When levels of Vitamin D are inadequate, our bodies lack basic immunity. Additionally, it also reduces inflammation.

Many cells in the human body have vitamin D receptors and need Vitamin D to function properly, including those in your skin and brain. Vitamin D is needed for normal bone mineralization and growth, maintenance of muscle strength and coordination, cardiovascular health, as well as strong and balanced immune function.

Recent research has shown that Vitamin D may play a role in keeping our lungs healthy, with higher levels of Vitamin D having positive effects on lung function and health. As such, Vitamin D increases resistance to respiratory tract pathogens such as Sars 2 coronavirus.

Recent studies from Spain in 2020 showed a correlation between Vitamin D and the incidence, severity, and mortality in Covid-19 patients with patients having higher levels of Vitamin D being more resistant to Covid19, with faster recovery and lower mortality. 

Low levels of Vitamin D have also been associated with hypertension, diabetes, and cardiovascular disease, which are risk factors in Covid-19.

Vitamin D is found in fish oil, mushrooms, egg yolks, and red meat. Most importantly it enters the skin through the ultraviolet radiation of sunlight. 

During the winter months in the northern hemisphere above the 35th latitude, Vitamin D deficiency becomes more prevalent in the general population.  Taking Vitamin D supplements is the best way to maintain adequate levels of vitamin D during the winter months.