Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Wernicke-Korsakoff syndrome ?
    ### Response:
    Wernicke-Korsakoff syndrome is a brain disorder due to thiamine deficiency that has been associated with both Wernicke's encephalopathy and Korsakoff syndrome. Wernicke's encephalopathy can result from alcohol abuse, dietary deficiencies, prolonged vomiting, eating disorders, or the effects of chemotherapy.
    