NewYork-Presbyterian Hospital/Columbia University Medical Center is the first in the greater New York City-area to offer Vagus Nerve Stimulation (VNS) Therapy as a long-term treatment specifically approved by the FDA for treatment-resistant depression (TRD). VNS Therapy is approved as a long-term adjunctive (add-on) treatment for patients 18 years of age and older who are experiencing a major depressive episode and have not had an adequate response to four or more adequate antidepressant treatments. VNS Therapy was approved for the treatment of drug-resistant epilepsy in 1997, and is now the first treatment specifically studied and approved for TRD. Major depressive disorder is one of the most prevalent and serious illnesses in the U.S., affecting nearly 19 million Americans every year. Of those, one fifth, or approximately four million people, do not respond to multiple antidepressant treatments. For these people, psychotherapy, antidepressant medications, and even sometimes electroconvulsive therapy do not work, or only work for a short while and stop working over time. VNS Therapy is a newly approved treatment option for these people.