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American Focus > Blog > Tech and Science > Vagus Nerve Stimulation Has Lasting Effects in People With Severe Depression : ScienceAlert
Tech and Science

Vagus Nerve Stimulation Has Lasting Effects in People With Severe Depression : ScienceAlert

Last updated: April 19, 2025 1:05 pm
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Vagus Nerve Stimulation Has Lasting Effects in People With Severe Depression : ScienceAlert
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Stimulating Vagus Nerves Shows Promise in Treating Severe Depression

Recent research suggests that stimulating crucial nerves connected to the brain could be a breakthrough treatment for individuals suffering from severe depression. A clinical trial conducted on 493 adults who had not responded to previous depression treatments revealed promising results.

Participants in the trial were fitted with a device capable of stimulating one of their vagus nerves, which then transmitted signals to areas of the brain responsible for regulating moods. After approximately ten months of assessments, those who received the stimulation treatment showed significant improvements in depressive symptoms, quality of life, and daily functionality.

Vagus nerves
There are left and right vagus nerves in our bodies. (Benote/iStock/Getty Images Plus)

Professor Charles Conway from Washington University in St Louis, who was involved in the study, highlighted the significance of the findings, especially for individuals who had struggled with depression for a long time without finding relief through traditional treatments.

While vagus nerve stimulation (VNS) has shown promise in treating depression in the past, the evidence of its effectiveness has not always been clear-cut. However, the recent trial results provide hope for those who have not responded to standard antidepressants.

It’s important to note that while the study was partially supported by a company that manufactures VNS therapy systems, the improvements reported by participants in their daily lives are encouraging.

Vagus Nerve Stimulation Shows Lasting Effects in People With Severe Depression
Mental paralysis can occur with major depression. (Marjan_Apostolovic/Canva)

Up to 30% of individuals with severe depression do not benefit from standard antidepressants, which can lead to serious consequences such as an increased risk of suicide, hospitalization, and disability. VNS offers a potential alternative for these individuals.

The researchers are also exploring the use of VNS in individuals with bipolar disorder and plan to continue monitoring the long-term effects of the treatment over the next four years. The study’s results indicate that the effects of VNS are likely to be long-lasting for those who respond positively to the treatment.

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The findings from the clinical trial have been published in two papers in Brain Stimulation, showcasing the potential of VNS as a novel approach to treating severe depression.

An earlier version of this article was published in January 2025.

TAGGED:DepressioneffectsLastingNERVEpeopleScienceAlertseverestimulationVagus
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