Dr. John Campbell | September 6, 2020

About 42% of the US population is vitamin D deficient, 82% in black people, 70% in Hispanics.

Study 1: Association of Vitamin D Status and Other Clinical Characteristics With COVID-19 Test Results, (JAMA Open, 3rd September, Chicago ) https://jamanetwork.com/journals/jama…Cohort study of 489 patients who had a vitamin D level measured in the year before COVID-19 testing.Relative risk of testing positive for COVID-19 was 1.77 times greater for patients with likely deficient vitamin D status compared with patients with likely sufficient vitamin D status, a difference that was statistically significant.

Study 2: First clinical trial on vitamin D and COVID Therapy Versus Best Available Therapy on Intensive Care Unit Admission and Mortality Among Patients Hospitalized for COVID-19: A Pilot Randomized Clinical Study (Spain, Journal of steroid biochemistry and molecular biology) https://www.sciencedirect.com/science/article/pii/S0960076020302764 Results: Of 50 patients treated with calcifediol, one required admission to the ICU (2%). Of 26 untreated patients, 13 required ICU admission (50%). p  less than 0.001. Of the patients treated with calcifediol, none died, and all were discharged, without complications. Of the patients not treated, 2 died.

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Vitamin D, First clinical trial