Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) G6PD Deficiency ?
    ### Response:
    Glucose-6-phosphate dehydrogenase (G6PD) deficiency is a genetic disorder that is most common in males. About 1 in 10 African American males in the United States has it. G6PD deficiency mainly affects red blood cells, which carry oxygen from the lungs to tissues throughout the body.
    