Using descriptive statistics and Student’s T-test we found no statistically significant differences between NT1 patients with obesity/overweight and NT1 patients without obesity/overweight when analyzing blood glucose and insulin levels, while we found lower HDL-cholesterol values in the obesity/overweight group (59.0 ± 14.9 vs 52.0 ± 13.2) (p<0.02). Here, INS is linked to obesity due to melanocortin 4 receptor deficiency.