The Effects of Vitamin D & COVID-19
Vitamin D is produced in the skin from UVB sunlight exposure and is
transported to the liver and then the kidneys where it is changed into an
active hormone that increases calcium transport from food in the gut and
ensures calcium is adequate to keep the skeleton strong and free of
can also support the immune system through a number of immune pathways
involved in fighting SARS2COV. Many recent studies confirm the pivotal role
of vitamin D in viral infections.
This study shows that, counter intuitively, countries at lower latitude and
typically sunny countries, such as Spain and Northern Italy, had low
concentrations of vitamin D and high rates of vitamin D deficiency. These
countries also experienced the highest infection and death rates in Europe.
The researchers propose that, whereas optimizing
levels will certainly benefit bone and muscle health, the data suggests
that it is also likely to reduce serious COVID-19 complications. This may
be because Vitamin D is important in regulation and suppression of the
inflammatory cytokine response, which causes the severe consequences of
COVID-19 an acute respiratory distress syndrome associated with ventilation
In one study
it was found that 100% of ICU COVID-19 patients less than 75 years old had
vitamin D insufficiency.
In another study
out of 55 patients with higher blood serum levels of vitamin D metabolite
(more than 30ng/ml 25-hydroxycholecalciferol), 47 had mild symptoms, 4 had
“ordinary” symptoms, 2 had severe symptoms and 2 had critical symptoms. Of
the 157 patients with lower vitamin D (less than 30ng/ml
25-hydroxycholecalciferol), 2 had mild symptoms, 55 ordinary symptoms, 54
severe symptoms and 46 critical symptoms.
In a third study
researchers found that across European countries, there was a strong
association between Vitamin D levels and per capita COVID-19 cases and
Taking a vitamin D supplement, especially if you're vitamin D deficient can
particularly reduce respiratory infections.
Recommended dosage is between 600 IU to 2,000 IU per day.
Here are some studies:
See all of LifeSource Vitamins Vitamin D articles:
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