T. gondii appeared to be interrelated to diabetes mellitus (DM) as it had been considered an inducer of Type I DM by damaging the pancreatic β cells to prohibit insulin production (Shirbazou et al., 2013); besides, its role in Type 2 DM by inducing chronic low-grade inflammatory reactions (Nosaka et al., 2016; Li et al., 2018). Here, INS is linked to diabetes mellitus.