Findings from a large study led by Mass General Brigham suggest scientists should continue investigating whether vitamin D supplements could influence long COVID. The research showed that taking high doses of vitamin D3 did not make COVID-19 infections less severe, but it may have a possible connection to long COVID outcomes. The results were published in The Journal of Nutrition.
“There’s been tremendous interest in whether vitamin D supplements can be of benefit in COVID, and this is one of the largest and most rigorous randomized trials on the subject,” said senior author JoAnn Manson, MD, DrPH, of the Mass General Brigham Department of Medicine. “While we didn’t find that high-dose vitamin D reduced COVID severity or hospitalizations, we observed a promising signal for long COVID that merits additional…