Comparing those with newly diagnosed T1DM and those with the disease for more than two years (Table S1), the former group showed lower median Cd (0.629 μg/L vs. 0.784 μg/L, p < 0.01) and MDA (3.341 μmol/L vs. 4.171 μmol/L, p < 0.05) values, and higher Hg (0.680 μg/L vs. 0.391 μg/L, p < 0.01) and SOD (1.678 U/mL vs. 1.396 U/mL, p < 0.01) values. Here, SOD1 is linked to type 1 diabetes mellitus.