Full article: G6PD Deficiency: Imbalance Of Functional Dichotomy Contributing to the Severity of COVID 19 Glucose 6 phosphate Dehydrogenase deficiency (G6PD deficiency) Labpedia.net PeerJ The research progress on the role of glucose 6 phosphate dehydrogenase in immune regulation Although G6PD deficiency, which can cause problems in red blood cells upon certain triggers, is the most common human enzyme defect, affecting over 400 million people, including over 1 in 10 Black File:Glutathion metabolism DE state in G6PD deficiency.png Wikimedia Commons The potential link between inherited G6PD deficiency, oxidative stress, and vitamin D deficiency and the racial inequities in mortality associated with COVID 19 ScienceDirect