56 posts, many on how much vitamin D to take.
Google search on vitamin D and covid found these:
Original article by Healthline has one study with 489 hospitalized patients, deficiency was 1.77 times higher to test positive for virus.
Another study by TrustedSource from University of Grenada in Spain has 1/50 with vitamin D treatment admitted to ICU, 13/26 without treatment admitted to ICU.
AARP references a September 2020 study by Meltzer has deficient people more likely to test positive. Page also references Spain study, and Brazil study that one high dose doesn’t affect severity.
https://www.aarp.org/health/conditions-treatments/info-2021/vitamin-d-covid.html
A study in PLOS ONE by Dr. Michael Holick of 235 patients had vitamin D sufficient patients 51.5% less likely to die than insufficient patients.
https://www.bumc.bu.edu/busm/2020/09/25/adequate-levels-of-vitamin-d-reduces-complications-death-among-covid-19-patients/
webmd says one study of those with low levels found a 7.2% chance of testing positive. [Worldometers as of 9/4/21 has 40.7M cases out of 591.5 tests = 6.9%, so about 5% higher.]
Black people who were just over the normal limit were two times more likely to test positive than those with “even higher levels”.
Another report suggests higher levels don’t lower risk of infection, hospitalization or severity.
A third study found that giving vitamin D to hospitalized patients with moderate to severe COVID-19 didn’t help their condition or reduce their hospital stay.
webmd doesn’t provide links to their studies
https://www.webmd.com/lung/vitamin-d-covid-19-what-to-know#1
Think of the barrage promoting vaccinations. Think of the cascade advocating masks. Then consider the embargo on vitamin D, which apparently reduces risks, for a relatively low cost with few complications.