“…Depression is the leading cause of disability worldwide and is a major contributor to the overall global burden of disease (Global Health Estimates, 2016). Its substantial socioeconomic burden is also contributed by a significantly reduced life expectancy of affected people, mainly due to suicide (Chesney, Goodwin, & Fazel, ) and comorbid medical conditions, in particular cardiovascular disorders (Kahl, Stapel, & Frieling, ; Musselman, Evans, & Nemeroff, ). The neurobiology of MDD is still not well understood, but decades of research have suggested that several neurotransmitter systems, in particular the serotonergic, dopaminergic, and adrenergic systems, are altered at different levels (aan het Rot, Mathew, & Charney, ).…”