In a study, 60 mg/kg curcumin was administered to adult male Wistar albino rats for whom diabetes was induced with STZ (60 mg/kg) for 30 days by oral gavage, and it was reported that the effect of curcumin on serum AST level was not significant, but it significantly decreased ALT level (Palma et al. 2014). Here, GPT is linked to diabetes mellitus.