Ensuring your vitamin D level is optimum appears to provide significant protection, particularly for the elderly. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7

Ensuring your vitamin D level is optimum appears to provide significant protection, particularly for the elderly. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7973108/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7973108/ https://scitechdaily.com/study-finds-vitamin-d3-important-for-fighting-infections-helps-strengthen-defenses-against-covid-19/ https://scitechdaily.com/study-finds-vitamin-d3-important-fo...