Vitamin D supplementation for the prevention and treatment of COVID-19: a position statement from the Spanish Society of Geriatrics and Gerontology

This 2021 position statement by the Spanish Society of Geriatrics and Gerontology, published in Revista Española de Geriatría y Gerontología, advocates for the use of vitamin D supplementation as a preventive and therapeutic measure against COVID-19, especially in older adults. The authors highlight the high prevalence of vitamin D deficiency