COVID and Vitamin D

From eNewsletter 8/13/2025

DID YOU KNOW that while this should not come as a surprise to you, a study from PLoS One found that those with insufficient or deficient vitamin D levels were at much higher risk for COVID-19-related hospitalization?

The study followed over 150,000 subjects. Deficient vitamin D levels were considered 24 nmol/L or less, insufficient levels were 25-50 nmol/L, while normal was 50 nmol/L and above.

This is critical because many labs in the United States consider above 30 nmol/L to be within reference range. We have always said between 50-80 is optimal.

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