GPT and obesity due to melanocortin 4 receptor deficiency: On the other hand, body mass index (BMI), aspartate transaminase (AST), alanine transaminase (ALT), Hemoglobin A1c, high density lipoprotein (HDL) cholesterol and low density lipoprotein (LDL) cholesterol, which are markers of obesity, diabetes, dyslipidemia, and liver enzymes, were comparable between the light- and non-alcohol groups.