Liraglutide 3.0 mg and Mental Health: Can Psychiatric Symptoms Predict Adherence to Therapy? Insights from a clinical audit

Abstract Introduction. The glucagon-like peptide-1 analogue liraglutide 3.0 mg is an out-of-pocket medication approved for weight management in obesity. We aimed to investigate the relationship between psychiatric symptoms (i.e., depression, anxiety, binge eating) and adherence to therapy. Methods. A clinical audit was carried out on 54 adults with obesity treated with liraglutide 3.0 mg. We retrospectively analyzed the relation between (1) psychiatric symptoms evaluated through the State-Trait Anxiety Inventory (STAI-Y1), the Beck Depression Inventory (BDI), the Binge Eating Scale (BES); and (2) adherence to therapy by assessing the maximum dosage (MD) and treatment duration (TD). Results. In the whole cohort, the average weight loss was 4.43% (± SD = 5.5). We found a negative correlation between anxiety symptoms (STAI-Y1 score) and MD (r=-,276), between depression symptoms (BDI score) and TD (r=-,276), and between a high probability of binge eating (BES score > 17) and TD (r=-,275). Linear regression analysis demonstrated that STAI-Y1 score predicted MD [R2 = .076, p = .044], BDI score predicted TD [R2 = .076, p = .044], and significant binge eating predicted TD [R2 = .076, p = .044]. Despite the lower adherence, the presence of psychiatric symptoms did not lead to a reduction in drug effectiveness on weight loss. Conclusion. Psychiatric symptoms can predict reduced adherence to liraglutide 3.0 mg therapy in real life. However, this does not appear to jeopardize its effect on weight loss. These findings suggest that persons with obesity and impaired mental health can also benefit from treatment. Level of evidence. Level V, descriptive studies.