Dan Iosifescu, MD, is an Associate Professor of Psychiatry at the NYU Grossman School of Medicine and director of clinical research at the Nathan Kline Institute for Psychiatric Research. His research has led to the validation of novel treatments for patients with severe mood and anxiety disorders, including pharmacological treatments such as ketamine and other glutamatergic drugs, and devices such as novel forms of magnetic stimulation. Topics covered: Ketamine and EsketamineWhy certain people respond better to certain medicationsSSRI mechanism of actionTranscranial magnetic stimulation