The potential link between inherited G6PD deficiency, oxidative stress, and vitamin D deficiency and the racial inequities in mortality associated with COVID 19 ScienceDirect DNA damage and synaptic and behavioural disorders in glucose 6 phosphate dehydrogenase deficient mice ScienceDirect Glucose 6 Phosphate Dehydrogenase Deficiency (G6PD) Glucose 6 phosphate dehydrogenase (G6PD) deficiency X linked recessive Xq28 is not true recessive as heterozygotes can express the trait; G6PD > No NADPH > No RBC glutathione protection > free radical damage hemolysis Glucose6phosphate dehydrogenase deficiency in transfusion medicine: the unknown risks Francis 2013 Vox Sanguinis Wiley Online Library Loss of glucose 6 phosphate dehydrogenase function increases oxidative stress and glutaminolysis in metastasizing melanoma cells PNAS