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Transcutaneous auricular vagus nerve stimulation (taVNS) reduces postpartum blues severity after cesarean delivery

A 5-day taVNS intervention significantly reduced postpartum blues severity on day 5, as measured by a visual analogue scale (median difference 4.13 cm; 95% CI, 3.39-4.93; p < 0.001). The active group also showed lower rates of Edinburgh Postnatal Depression Scale scores ≥13 at 1 month postpartum (4% vs. 26%; p = 0.003) and improved sleep quality on postoperative days 1-4.

Last updated: Jul 21, 2026•1 RCTs•📖 Read as article →

Evidence Score

Evidence Score44/100
Human RCT★★☆☆☆
Meta-analysis☆☆☆☆☆
Mechanism★★★★★
Safety★★★★☆
Confidencelow

Study Evidence

Study 1. Effectiveness of transcutaneous auricular vagus nerve stimulation in alleviating postpartum blues following cesarean delivery: A randomized double-blind controlled trial.

observational

Cheng Q, Lu M, Chen Y, Han Q, Du R, Yang W, Huang X, Zhang Y, Li J, Zhang J, Yu X · Journal of affective disorders (2026)

Participants: N/A
Duration: 5 days intervention, outcomes monitored through 3 months postpartum
Intervention: Active transcutaneous auricular vagus nerve stimulation (taVNS) applied over 5 days postpartum
Outcome: Postpartum blues severity (visual analogue scale), general mood (Profile of Mood States, Stein Maternity Blues Scale), Edinburgh Postnatal Depression Scale scores ≥13 at 1 month, postoperative pain, sleep quality (Richards-Campbell Sleep Questionnaire)
Effect Size: Median difference 4.13 cm (95% CI, 3.39-4.93) for VAS PPB severity
Population: 100 women following cesarean delivery

Result:

PubMed: 42462365DOI: 10.1016/j.jad.2026.122256

Mechanism Graph

taVNS activates vagus nerve afferents via auricular branch
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Modulates central autonomic and mood-regulating circuits
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Reduces inflammatory and stress responses
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Result: Decreased postpartum blues severity and improved mood

Limitations

  • ⚠Specific stimulation parameters (e.g., frequency, intensity) not detailed in abstract
  • ⚠Single-center trial may limit generalizability
  • ⚠Sham control may not fully blind participants due to potential sensory differences

Frequently Asked Questions

What is taVNS?▼

Transcutaneous auricular vagus nerve stimulation is a non-invasive technique that stimulates the vagus nerve through electrodes placed on the ear.

How long was the taVNS treatment given?▼

The intervention was applied over 5 days following cesarean delivery.

Did taVNS affect depression rates at one month?▼

Yes, only 4% of the active group had Edinburgh Postnatal Depression Scale scores ≥13 at 1 month compared to 26% in the sham group.

Was sleep quality improved?▼

Yes, sleep quality assessed by the Richards-Campbell Sleep Questionnaire was significantly improved on postoperative days 1 to 4.

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References

  1. 1.Cheng Q, Lu M, Chen Y, Han Q, Du R, Yang W, Huang X, Zhang Y, Li J, Zhang J, Yu X. "Effectiveness of transcutaneous auricular vagus nerve stimulation in alleviating postpartum blues following cesarean delivery: A randomized double-blind controlled trial.." Journal of affective disorders, 2026. PMID: 42462365 DOI: 10.1016/j.jad.2026.122256
Disclaimer: This content is for educational purposes only and is not medical advice. Evidence scores reflect the quality and quantity of available research, not clinical recommendations. Always consult a healthcare professional before starting any supplement or intervention.