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 Full article: G6PD Deficiency: Imbalance Of Functional Dichotomy Contributing to the Severity of COVID 19 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 Glucose 6 phosphate Dehydrogenase deficiency (G6PD deficiency) Labpedia.net Role of G6PD in managing oxidative stress Glutathione peroxidase Download Scientific Diagram