Type 2 diabetes patients (7 people), who have been diagnosed with type 2 diabetes for at least 5 years, were grouped with blood glucose, cholesterol, low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), triglyceride, alanine amino transferase (AST) and aspartate amino transferase (ALT) levels that are outside the normal range and with body mass indices greater than 30. Here, GPT is linked to type 2 diabetes mellitus.