<h4>Purpose</h4>Based on the presence of early satiety in anorexia nervosa (AN), which may delay recovery, and given the dramatic impact of GLP-1 and GIP analog treatment on satiety and weight reduction in obesity by diminishing the sensation of hunger, we initiated this cross-sectional pilot study to explore fasting incretin levels in AN and to identify possible correlations between these hormones and psychiatric symptoms.<h4>Methods</h4>17 female subjects aged 18-35 were enrolled; 10 previously diagnosed with AN (5 weight restored, 5 non-weight restored) and 7 healthy controls (HC). The gene discussed is GIP; the disease is obesity due to melanocortin 4 receptor deficiency.