The potential link between inherited G6PD deficiency, oxidative stress, and vitamin D deficiency and the racial inequities in mortality associated with COVID 19 ScienceDirect Figure, Glucose 6 Phosphate Dehydrogenase (G6PD) Deficiency. Diagram] StatPearls NCBI Bookshelf 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 DNA damage and synaptic and behavioural disorders in glucose 6 phosphate dehydrogenase deficient mice ScienceDirect Metabolism: The pentose phosphate pathway and G6PD deficiency (practice) Khan Academy