Increased stearoyl-CoA desaturase activity is associated with obesity [56], which can explain the positive association between pBMI and MUFA (C16:1–n7, C18:1–n7, C18:1–n9), as well as the corresponding LysoPC (Lysopc16:1, LysoPC18:1) and the concurrent negative association of PC36:0. Here, SCD is linked to obesity due to melanocortin 4 receptor deficiency.