| AE | Adverse Event |
| aHR | Adjusted Hazard Ratio |
| ATC | Anatomical Therapeutic Chemical |
| BDI-II | Beck Depression Inventory-II |
| BMI | Body Mass Index |
| C-SSRS | Columbia-Suicide Severity Rating Scale |
| CI | Confidence Interval |
| CNS | Central Nervous System |
| EHR | Electronic Health Record |
| EMA | European Medicines Agency |
| FDA | U.S. Food and Drug Administration |
| GAD-7 | Generalized Anxiety Disorder-7 |
| GIP | Glucose-Dependent Insulinotropic Polypeptide |
| GLP-1 | Glucagon-Like Peptide-1 |
| GLP-1 RA | Glucagon-Like Peptide-1 Receptor Agonist |
| GRADE | Grading of Recommendations Assessment, Development and Evaluation |
| HADS | Hospital Anxiety and Depression Scale |
| HADS-A | Hospital Anxiety and Depression Scale—Anxiety |
| HADS-D | Hospital Anxiety and Depression Scale—Depression |
| HR | Hazard Ratio |
| HRQoL | Health-Related Quality of Life |
| ICD | International Classification of Diseases |
| JBI | Joanna Briggs Institute |
| MCS | Mental Component Summary |
| MD | Mean Difference |
| MDD | Major Depressive Disorder |
| MeSH | Medical Subject Headings |
| NR | Not Reported |
| OR | Odds Ratio |
| PHQ-9 | Patient Health Questionnaire-9 |
| PRISMA | Preferred Reporting Items for Systematic Reviews and Meta-Analyses |
| PROSPERO | International Prospective Register of Systematic Reviews |
| PTSD | Post-Traumatic Stress Disorder |
| RCT | Randomized Controlled Trial |
| ROBINS-I | Risk Of Bias In Non-randomized Studies of Interventions |
| RoB 2 | Risk of Bias 2 |
| RR | Relative Risk |
| SE | Standard Error |
| SF-36 MCS | 36-Item Short Form Health Survey Mental Component Summary |
| SGLT2 | Sodium-Glucose Cotransporter 2 |
| SGLT2i | Sodium-Glucose Cotransporter-2 Inhibitor |
| SWiM | Synthesis Without Meta-analysis |
| T2DM | Type 2 Diabetes Mellitus |