INS and type 1 diabetes mellitus: Moreover, the level of blood insulin in the T1DM group was 0.17 ± 0.02 ng/mL and that in the T2DM group was 0.24 ± 0.05 ng/mL, while the blood insulin level in the CON group was 0.30 ± 0.08 ng/mL after a 12-week study (Figure 2(b)).