**5. Conclusions**

Psychopathological symptoms and reduced well-being are especially pronounced in overweight or obese adolescents. Thus, stand-alone psychological interventions for this risk group should be considered. At least, mental health components should be an integral part of any intervention for overweight and obese adolescents which primarily focus on promoting healthy dietary and physical activity habits, respectively, concerning losing weight. Our network analysis indicates that psychological interventions focusing on improving mood (respectively, reducing symptoms of depression and anxiety), coping with negative emotions and tackling inner tension, restlessness and stress might be the most promising targets. These variables might also be promising targets for preventive interventions to promote mental health in adolescents across the whole weight spectrum which can be implemented through large-scale school-based initiatives.

**Supplementary Materials:** The following are available online at https://www.mdpi.com/article/ 10.3390/nu13114096/s1, Table S1: Standardized centrality indices of the EBIC graphical LASSO network for the overweight and underweight subsamples, Figure S1: Correlation stability plot measuring the stability of betweenness, closeness and strength indices in the overweight subsample, Figure S2: Correlation stability plot measuring the stability of betweenness, closeness and strength indices in the underweight subsample, Figure S3: Edge accuracy plot depicting 95% confidence obtained from 1.000 bootstrap samples drawn from the population overweight adolescents, Figure S4: Edge accuracy plot depicting 95% confidence obtained from 1.000 bootstrap samples drawn from the population underweight adolescents, Figure S5: Network plot and centrality indices plot for adolescents with normal weight.

**Author Contributions:** Conceptualization, K.W., A.K., G.W.; methodology, M.Z., J.P.; formal analysis, M.Z.; investigation, J.P., S.T., M.Z.; resources, A.K., G.W.; data curation, M.Z., J.P.; writing—original draft preparation, M.Z.; writing—review and editing, K.W., G.W., A.K., J.P., S.T.; visualization, M.Z.; supervision, A.K., G.W., K.W.; project administration, M.Z., J.P., S.T.; funding acquisition, A.K. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research was funded by "Gemeinsame Gesundheitsziele-Pharma Master Agreement (a cooperation of the Austrian pharma industry and Austrian social insurances); grant number: 99901001300.

**Institutional Review Board Statement:** The study was conducted according to the guidelines of the Declaration of Helsinki, and approved by the Ethics Committee of the Medical University of Vienna (reference number: #1134/2013, date of approval: 13 May 2013).

**Informed Consent Statement:** Informed consent was obtained from all subjects involved in the study including legal representatives for subjects below the age of 18.

**Data Availability Statement:** The data that support the findings of this study are available from the corresponding author upon reasonable request.

**Conflicts of Interest:** The authors declare no conflict of interest. The funder had no role in the design of the study; in the collection, analyses, or int erpretation of data; in the writing of the manuscript, or in the decision to publish the results.
