April 14, 2021, 3:17 PM ET, Will Stone
When the pandemic hit, many Americans turned to vitamins and supplements in hopes of boosting their immune systems.
Scientists also raced to study them. Vitamin D, perhaps more than any other, captured the attention of researchers.
Even the nation’s top infectious disease doctor, Anthony Fauci, embraced the idea of using the vitamin to help keep COVID-19 at bay, saying in September that he takes a supplement to avoid being deficient and “would not mind recommending” it to others.