Not enough eligible patients available

The purpose of this study is to evaluate the effect of a one-year nutritional intervention with either betaine or vitamin E supplementation, or a weight reducing diet and exercise program on liver steatosis and steatohepatitis.

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