Non-alcoholic Fatty Liver Disease (NAFLD) in HIV: The Role of Nutritional Interventions

Inclusion Criteria: * Baseline liver biopsy with macrovesicular fatty degeneration with inflammation (lobular or portal), with or without Mallory bodies, hepatocyte damage, and/or fibrosis diagnostic of NAFLD * Convincing evidence of negligible alcohol consumption (\< 20 grams of ethanol per day) obtained from a detailed history, confirmed by at least one close relative * If hyperlipidemia or diabetes, stable drug regimen required for the 6 months prior to and during the study * Willingness to maintain stable weight and normal exercise program for the duration of the study, if randomized to vitamin E or betaine Exclusion Criteria: * Liver disease of other etiology diagnosed as per routine medical investigation (e.g., chronic viral hepatitis, auto-immune chronic hepatitis, primary biliary cirrhosis or genetic liver disease such as Wilson's disease, hemochromatosis, alpha-1 antitrypsin deficiency, or biliary obstruction) * Complications of liver disease such as recurrent variceal bleeding, resistant ascites, spontaneous portosystemic encephalopathy, or bacterial peritonitis * Concurrent medical illness contra-indicating a liver biopsy, history of unexplained bleeding, hemophilia or abnormal coagulation results as per routine laboratory work-up or other reason judged by the hepatologist to contra-indicate a percutaneous liver biopsy * Medications known to precipitate steatohepatitis (corticosteroids, high dose estrogens, methotrexate, amiodarone, calcium channel blockers, spironolactone, sulfasalazine, naproxen, oxacillin or ampinovire) in the 6 months prior to entry * Antioxidant vitamin supplementation, ursodeoxycholic acid, or any other experimental drug 6 months prior to study entry * Pregnant or lactating