2. E. Corruble, B. Falissard, and P. Gorwood. “Is DSM-IV Bereavement Exclusion for Major Depression Relevant to Treatment Response? A Case-Control, Prospective Study.” J Clin Psychiatry 72(7) (July 2011): 898–902. doi: 10.4088/JCP.09m05681blu.

3. Alan F. Schatzberg. “Scientific Issues Relevant to Improving the Diagnosis, Risk Assessment, and Treatment of Major Depression.” Am J Psychiatry 176(5) (2019): 342–47. doi: 10.1176/appi.ajp.2019.19030273.

4. M. K. Jha, A. Minhajuddin, C. South, A. J. Rush, and M. H. Trivedi. “Irritability and Its Clinical Utility in Major Depressive Disorder: Prediction of Individual-Level Acute-Phase Outcomes Using Early Changes in Irritability and Depression Severity.” Am J Psychiatry 176(5) (May 1, 2019): 358–366. doi: 10.1176/appi.ajp.2018.18030355. Epub Mar 29, 2019. PMID: 30922100.

5. Maurice M. Ohayon and Alan F. Schatzberg. “Chronic Pain and Major Depressive Disorder in the General Population.” J Psychiatr Res 44(7) (2010): 454–61. doi: 10.1016/j.jpsychires.2009.10.013.

6. R. C. Kessler, W. T. Chiu, O. Demler, and E. E. Walters. “Prevalence, Severity, and Comorbidity of 12-Month DSM-IV Disorders in the National Comorbidity Survey Replication.” Arch Gen Psychiatry 62(6) (2005): 617–627. doi: 10.1001/archpsyc.62.6.617.

7. R. C. Kessler, P. Berglund, O. Demler, et al. “The Epidemiology of Major Depressive Disorder: Results from the National Comorbidity Survey Replication (NCS-R).” JAMA 289 (2003): 3095–3105. doi: 10.1001/ jama.289.23.3095; B. W. Penninx, D. S. Pine, E. A. Holmes, and A. Reif. “Anxiety Disorders.” Lancet 397(10277) (2021): 914–927.

8. M. Olfson, S. C. Marcus, and J. G. Wan. “Treatment Patterns for Schizoaffective Disorder and Schizophrenia Among Medicaid Patients.” Psychiatr Serv 60 (2009): 210–216. doi: 10.1176/ps.2009.60.2.210.

9. Seth Himelhoch, Eric Slade, Julie Kreyenbuhl, Deborah Medoff, Clayton Brown, and Lisa Dixon. “Antidepressant Prescribing Patterns Among VA Patients with Schizophrenia.” Schizophr Res 136(1) (2012): 32–35. doi: 10.1016/j.schres.2012.01.008.

10. P. D. Harvey, R. K. Heaton, W. T. Carpenter Jr., M. F. Green, J. M. Gold, and M. Schoenbaum. “Functional Impairment in People with Schizophrenia: Focus on Employability and Eligibility for Disability Compensation.” Schizophr Res 140(1–3) (2012): 1–8. doi: 10.1016/j.schres.2012.03.025.

11. L. L. Judd, H. S. Akiskal, P. J. Schettler, et al. “The Long-Term Natural History of the Weekly Symptomatic Status of Bipolar I Disorder.” Arch Gen Psychiatry 59(6) (June 2002): 530–537. doi: 10.1001/archpsyc.59.6.530.

12. “Biomarkers Outperform Symptoms in Parsing Psychosis Subgroups.” National Institutes of Health. December 8, 2015. htps://www.nih.gov/news-events/news-releases/biomarkers-outperform-symptoms-parsing – psychosis-subgroups.

13. Maurice M. Ohayon and Alan F. Schatzberg. “Prevalence of Depressive Episodes with Psychotic Features in the General Population.” Am J Psychiatry 159(11) (2002): 1855–1861. doi: 10.1176/appi.ajp.159.11.1855.

14. B. Bandelow and S. Michaelis. “Epidemiology of Anxiety Disorders in the 21st Century.” Dialogues Clin Neurosci 17(3) (2015): 327–335. doi: 10.31887/DCNS.2015.17.3/bbandelow.

15. O. Plana-Ripoll, C. B. Pedersen, Y. Holtz, et al. “Exploring Comorbidity Within Mental Disorders Among a Danish National Population.” JAMA Psychiatry 76(3) (2019): 259–270. doi: 10.1001/ jamapsychiatry.2018.3658.

16. R. C. Kessler, W. T. Chiu, O. Demler, and E. E. Walters. “Prevalence, Severity, and Comorbidity of 12-Month DSM-IV Disorders in the National Comorbidity Survey Replication.” Arch Gen Psychiatry 62(6) (2005): 617–627. doi: 10.1001/archpsyc.62.6.617.

17. M. C. Lai, C. Kassee, R. Besney, S. Bonato, L. Hull, W. Mandy, P. Szatmari, and S. H. Ameis. “Prevalence of Co-occurring Mental Health Diagnoses in the Autism Population: A Systematic Review and Meta-Analysis.” Lancet Psychiatry 6(10) (October 2019): 819–829. doi: 10.1016/S2215-0366(19)30289-5.

18. O. Plana-Ripoll, C. B. Pedersen, Y. Holtz, et al. “Exploring Comorbidity Within Mental Disorders Among a Danish National Population.” JAMA Psychiatry 76(3) (2019): 259–270. doi: 10.1001/ jamapsychiatry.2018.3658.

19. National Institute of Mental Health. “Eating Disorders.” National Institute of Mental Health, US Dept. of Health and Human Services. https://www.nimh.nih.gov/health/statistics/eating-disorders.shtml.

20. K. R. Merikangas, J. P. He, M. Burstein, S. A. Swanson, S. Avenevoli, L. Cui, C. Benjet, K. Georgiades, and J. Swendsen. “Lifetime Prevalence of Mental Disorders in U.S. Adolescents: Results from the National Comorbidity Survey Replication – Adolescent Supplement (NCS-A).” J Am Acad Child Adolesc Psychiatry 49(10) (October 2010): 980–989. http://www.ncbi.nlm.nih.gov/pubmed/20855043/.

21. O. Plana-Ripoll, C. B. Pedersen, Y. Holtz, et al. “Exploring Comorbidity Within Mental Disorders Among a Danish National Population.” JAMA Psychiatry 76(3) (2019): 259–270. doi: 10.1001/ jamapsychiatry.2018.3658.

22. B. B. Lahey, B. Applegate, J. K. Hakes, D. H. Zald, A. R. Hariri, and P. J. Rathouz. “Is There a General Factor of Prevalent Psychopathology During Adulthood?” J Abnorm Psychol 121(4) (2012): 971–977. doi: 10.1037/a0028355.

23. Avshalom Caspi and Terrie E. Moffitt. “All for One and One for All: Mental Disorders in One Dimension.” Am J Psychiatry 175(9) (2018): 831–44. doi: 10.1176/appi.ajp.2018.17121383.

24. E. Pettersson, H. Larsson, and P. Lichtenstein. “Common Psychiatric Disorders Share the Same Genetic Origin: A Multivariate Sibling Study of the Swedish Population.” Mol Psychiatry 21 (2016): 717–721. doi: 10.1038/mp.2015.116.

25. A. Caspi, R. M. Houts, A. Ambler, et al. “Longitudinal Assessment of Mental Health Disorders and Comorbidities Across 4 Decades Among Participants in the Dunedin Birth Cohort Study.” JAMA Netw Open 3(4) (2020): e203221. doi: 10.1001/jamanetworkopen.2020.3221.

1. A. P. Rajkumar, H. T. Horsdal, T. Wimberley, et al. “Endogenous and Antipsychotic-Related Risks for Diabetes Mellitus in Young People with Schizophrenia: A Danish Population-Based Cohort Study.” Am J Psychiatry 174 (2017): 686–694. doi: 10.1176/appi.ajp.2016.16040442.

2. B. Mezuk, W. W. Eaton, S. Albrecht, and S. H. Golden. “Depression and Type 2 Diabetes over the Lifespan: A Meta-Analysis.” Diabetes Care 31 (2008): 2383–2390. doi: 10.2337/dc08-0985.

3. K. Semenkovich, M. E. Brown, D. M. Svrakic, et al. “Depression and Diabetes.” Drugs 75(6) (2015): 577.doi: 10.1007/s40265-015-0347-4.

4. M. E. Robinson, M. Simard, I. Larocque, J. Shah, M. Nakhla, and E. Rahme. “Risk of Psychiatric Disorders and Suicide Attempts in Emerging Adults with Diabetes.” Diabetes Care 43(2) (2020): 484–486. doi: 10.2337/dc19-1487.

5. Martin Strassnig, Roman Kotov, Danielle Cornaccio, Laura Fochtmann, Philip D. Harvey, and Evelyn J.Bromet. “Twenty-Year Progression of Body Mass Index in a County-Wide Cohort of People with Schizophrenia and Bipolar Disorder Identified at Their First Episode of Psychosis.” Bipolar Disord 19(5) (2017): 336–343. doi: 10.1111/bdi.12505.

6. L. Mische Lawson and L. Foster. “Sensory Patterns, Obesity, and Physical Activity