Could Vitamin D Decrease Your Risk Of COVID-19? Here's What We Know

Vitamin D enhances the function of immune cells that protect your body against pathogens. For example, low vitamin D levels may increase risk of respiratory diseases. Diseases like tuberculosis, asthma, chronic obstructive pulmonary disease, and bacterial respiratory infections. What’s more, vitamin D deficiency may decrease lung function, which may affect your body’s ability to fight respiratory infections.

Right now, there’s no cure or treatment for COVID-19. There have been no studies that have investigated vitamin D supplements and the risk of contracting the coronavirus. The evidence lies in the fact that multiple studies show that Vitamin D deficiency leads to decreased immune function.
According to Healthline, a recent review that included 11,321 people from 14 countries demonstrated that supplementing with vitamin D decreased the risk of acute respiratory infections (ARI) in both those who were deficient in vitamin D and those with adequate levels. Overall, the study showed that vitamin D supplements reduced the risk of developing at least one ARI by 12%. The protective effect was strongest in those with low vitamin D levels.
Keep in mind that there’s no scientific evidence that taking supplemental vitamin D can protect you from developing COVID-19. However, being deficient in vitamin D may increase your susceptibility to overall infection and disease by harming immune function. Vitamin D may protect against respiratory infections, especially among those who are deficient in the vitamin. Please keep in mind that there’s currently no evidence that taking any supplement reduces your risk of developing COVID-19.