Vitamin D Supplementation Is Effective in Preventing COVID-19, Study Suggests

Modern life has taken us away from the sunlight and deprived us of our primary source of vitamin D, a nutrient critical to our health and immune function. Aleksandra Gigowska/Shutterstock

Vitamin D supplementation can help prevent COVID-19 without serious adverse events, regardless of the individual’s vitamin D status, a study suggests.

The peer-reviewed study, published in the Archives of Medical Research, enrolled 321 frontline health care workers from four hospitals in Mexico City, who all tested negative for COVID-19 at the start of the study.