07/06/2026
The vagus nerves are accesses on the ears for dramatic results in depression
A major US clinical trial found that vagus nerve stimulation may give lasting relief to some people with severe treatment-resistant depression.
The treatment uses a small implanted device, similar to a pacemaker. It is placed under the skin of the chest and connected by a thin wire to the left vagus nerve in the neck.
The device sends brief, low-level electrical pulses at regular times. These pulses are thought to influence brain circuits involved in mood, although researchers are still studying exactly how the effect works.
The research came from the RECOVER trial, registered as NCT03887715. It included 493 people in the United States who had not improved after at least four treatments for their current episode of depression.
Many participants had tried far more than four treatments. On average, they had already tried 13 treatments that did not help before joining the study.
In the 2026 follow-up report, researchers focused on 214 patients whose devices were active from the start. About 69 percent had meaningful improvement on at least one measure after 12 months.
Among those who improved, more than 80 percent kept the benefit or improved further by 24 months. The benefits included lower depression symptoms, better quality of life, and improved daily functioning.
For people who had the strongest response after one year, meaning at least a 50 percent drop in symptoms, 92 percent were still showing benefit two years later.
About one in five patients had little or no depressive symptoms by the end of two years. This is notable because the patients in the trial had lived with depression for an average of 29 years.
The findings also suggest that vagus nerve stimulation is not a quick fix. Some people who did not improve in the first year did show improvement by the second year, so the treatment may take time to work.
Overall, the trial suggests that vagus nerve stimulation could be an important long-term option for some people with severe depression who have not responded to standard treatments.
