In addition, the levels of C-reactive protein (CRP) (median, 33.1 vs. 41.65 mg/L) and procalcitonin (median, 0.046 vs. 0.06 ng/mL) were also higher in the obesity group than those in the normal weight group, although the differences were not significant, possibly because the size of the obesity group was small. Here, CRP is linked to obesity due to melanocortin 4 receptor deficiency.