SCD and type 1 diabetes mellitus: In the T1DM group, SCD1 indices 1 and 2 decreased, meaning that a smaller proportion of palmitate (16:0) and stearate (18:0) were desaturated in T1DM individuals (explaining the higher proportion of saturated FFAs), while the elongase index increased compared to controls, which meant that more palmitoleate (16:1) was converted into oleate (18:1c9).