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Two New Trials Find No Link between Vitamin D Supplements & Reduced Risk of COVID-19

Medical Xpress
Photo: Unsplash/CC0 Public Domain

Two large clinical trials published by The BMJ today show that boosting vitamin D levels in adults during the SARS-CoV-2 pandemic was not associated with protection against respiratory tract infections or COVID-19.

Vitamin D metabolites have long been recognized to support innate immune responses to respiratory viruses and bacteria, and some studies have shown that vitamin D may protect against respiratory tract infections, particularly among those who are vitamin D-deficient.

Vitamin D has therefore received much attention for its potential role in preventing and treating COVID-19, but most studies published so far are ...