INS and non-alcoholic fatty liver: As expected, BMI was significantly higher in NASH patients compared to both NL and NAFL groups, and variables regarding glucose metabolism (glucose, insulin, HOMA-IR) and liver enzymes (aspartate aminotransferase -AST-, alanine aminotransferase -AST-, gamma-glutamyltransferase -GGT-) were significantly different between all groups.