Vitamin D can bolster the immune system.
The team will also assess whether the vitamin D prevents close household contacts from becoming infected.
If your doctor thinks you are deficient, they may recommend a supplement.
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Vitamin D Deficiency Is Common
Vitamin D deficiency is extremely prevalent in Americans.
A 2010 study found as many as 42% of Americans are deficient in the vitamin.
For that reason, it can be easy to suggest vitamin D deficiency exacerbates all sorts of health problems.
There is also a mechanism of action that may have something to do with [the COVID-19] virus.
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