What is Depression? | Helen M. Farrell

The following is the extract of lesson taken by Helen M. Farrell at Ted-Ed. For the complete lesson, click here. Helen M. Farrell, M.D. is an enthusiastic and experienced medical professional; board certified Psychiatrist & Forensic Psychiatrist; writer; and speaker.She is a Harvard Medical School Instructor in psychiatry and a staff psychiatrist at Beth Israel […]