The present invention comprises methods and compositions for the treatment or alleviation of NAFLD (non-alcoholic fatty liver disease) and those conditions associated with NAFLD, including fatty liver disease, nonalcoholic steatohepatitis (NASH) and cirrhosis through the use of pharmaceutical formulations of lysosomal acid lipase or related proteins and/or polypeptides. This invention is also directed to a combination therapy treatment for treating The Metabolic Syndrome. As part of a combination therapy regime for the treatment of The Metabolic Syndrome, pharmaceutical formulations of lysosomal acid lipase or related proteins and/or polypeptides are used as part of the combination therapy regime for treating NAFLD (and NASH), which comprises one of the conditions constituting The Metabolic Syndrome,
