What causes a "fatty liver"?

my friend shes in her fiftys she drinks a lot of alcohol manly strong spirits,shes just had a biopsy she said she had too many red blood cells and the results have shown she has a "fatty liver"shes told me the doctors have told her this is nothing to do with her drinking!im not to sure tho?any one had... show more my friend shes in her fiftys she drinks a lot of alcohol manly strong spirits,shes just had a biopsy she said she had too many red blood cells and the results have shown she has a "fatty liver"shes told me the doctors have told her this is nothing to do with her drinking!im not to sure tho?any one had simular?thanks for answers
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