Over 80 percent of 200 COVID-19 patients in a hospital in Spain have vitamin D deficiency, according to a new study published in the Endocrine Society’s Journal of Clinical Endocrinology & Metabolism. Vitamin D is a hormone the kidneys produce…

Over 80% of Hospitalized COVID-19 Patients Have Vitamin D Deficiency, Study Finds Over 80 percent of 200 COVID-19 patients in a hospital in Spain have vitamin D deficiency, according to a new study published in the Endocrine Society’s Journal of…