Recently, the U.S. Food and Drug Administration approved a new treatment for chronic depression, vagus nerve stimulation, which used to be used to treat epilepsy, and in later clinical practice, doctors found that it was just as effective in relieving depressed patients’ moods. Depression has become a highly prevalent condition in today’s society, and the medical community usually takes medication to treat depression, but some medications have significant side effects. Some people with chronic depression choose to commit suicide because their condition is not relieved for a long time. The manufacturer of the Vagus Nerve Stimulator conducted a clinical trial on 200 depressed patients, all of whom were unable to relieve their symptoms with existing therapies. The vagus nerve stimulator is a pacemaker-like electronic device that is implanted in the patient’s body and stimulates the vagus nerve in the patient’s brain through its constant electrical shocks. It was initially used to treat epilepsy, and later researchers began experimenting with it to treat depression when epilepsy patients reported that the treatment made them feel better. Experts believe that the introduction of vagus nerve stimulation to treat depression will not only be effective in relieving symptoms, but will also prevent many tragedies from occurring.