GPT and diabetes mellitus: Study from our laboratory [16] showed that the treatment of streptozotocin (STZ)-diabetic rats with 90 mg/kg curcumin incorporated in yoghurt for 31 days improved various physiological and biochemical biomarkers classically altered in this experimental model of diabetes; the authors observed significant falls in the plasma levels of glucose, TG and aspartate and alanine aminotransferases, in the urinary levels of glucose, urea and protein, and an increase in the hepatic glycogen content.