Plasma glucose, alanine aminotransferase (ALT) and aspartate animotransferase (AST) levels in rats fed a standard low fat (Control diet) or a high fat diet for 18 weeks. Blood samples were collected and the concentration of glucose and the activity of ALT and AST was measured. Data are the mean ± SEM from 6 (Control diet) or 9 (High fat diet) animals.