It is difficult to tell if vitamin D deficiency is a risk factor for severe COVID-19. Risk factors include general ill-health, a poor diet, and pre-existing health conditions, such as diabetes, and liver and kidney disease. Vitamin D is important for healthy bones, teeth and muscles. It helps to regulate blood sugar, the heart and blood vessels, and the lungs and airways. It also has a role in boosting the body’s immune system. These are areas affected by COVID-19, so giving vitamin D to people with COVID-19 might help them to recover more quickly or have the disease less severely.
Source: https://www.cochrane.org
Thus, the best preparation against corona virus infection for the body is to get enough sunlight daily.
Please check other benefits of sunlight in this video.
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