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Acupuncture improves insomnia severity and sleep quality in breast cancer patients with post-chemotherapy insomnia, but the effect may not be clinically meaningful.

In a randomized sham-controlled trial of 76 breast cancer patients with post-chemotherapy insomnia, acupuncture significantly reduced Insomnia Severity Index (ISI) scores compared to sham at post-treatment (mean difference -1.61, 95% CI -2.71 to -0.50) and at 1-month follow-up (-1.77, 95% CI -3.22 to -0.32). However, the between-group difference did not reach the minimal clinically important difference, so a clinically meaningful advantage over sham cannot be concluded.

Last updated: Aug 13, 2026•1 RCTs•📖 Read as article →

Evidence Score

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

Study Evidence

Study 1. Efficacy of Acupuncture for Insomnia After Chemotherapy in Breast Cancer: A Randomized Sham-Controlled Trial.

observational

Li J, Liu Z, Li L, Xia M, Chen X, Mei Y, Zhang Y, Chen Y · Nature and science of sleep (2026)

Participants: N/A
Duration: 9 months (including 5 weeks intervention and follow-ups)
Intervention: Acupuncture (10 sessions over 5 weeks, biweekly) vs. sham acupuncture
Outcome: Insomnia Severity Index (ISI), PSQI, polysomnography parameters (sleep efficiency, N3 proportion, WASO), BAI, BDI, BFI-C, TCMSRS
Effect Size: ISI mean difference at post-treatment: -1.61 (95% CI: -2.71 to -0.50); PSQI mean difference: -1.18 (95% CI: -2.01 to -0.36); sleep efficiency increase: 10.54% (95% CI: 0.75 to 20.33)
Population: 76 breast cancer patients (stage I-III) with chronic insomnia after chemotherapy, meeting ICSD-3 criteria and TCM syndrome of Yin deficiency with excessive fire

Result:

PubMed: 42572762DOI: 10.2147/NSS.S604964

Mechanism Graph

Acupuncture may modulate neurotransmitter levels (e.g., serotonin, melatonin) involved in sleep regulation
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Acupuncture may reduce sympathetic nervous system activity, promoting relaxation
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Acupuncture may influence inflammatory cytokines or stress hormones that affect sleep
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Result: Improved sleep efficiency, increased N3 sleep, reduced wake after sleep onset, and reduced insomnia severity

Limitations

  • ⚠The primary outcome (ISI) between-group difference did not reach the minimal clinically important difference, limiting clinical significance
  • ⚠Single-center study with relatively small sample size (76 participants)
  • ⚠Short-term follow-up (only up to 1 month after treatment), no long-term efficacy data

Frequently Asked Questions

Is acupuncture effective for insomnia after chemotherapy in breast cancer patients?▼

Acupuncture showed statistically significant improvements in insomnia severity and sleep quality compared to sham, but the difference was not clinically meaningful (did not reach minimal clinically important difference).

What were the key sleep improvements observed with acupuncture?▼

Polysomnography showed increased sleep efficiency by 10.54%, increased N3 (deep sleep) proportion by 8.26%, and reduced wake after sleep onset by 32 minutes.

How many acupuncture sessions were given in the trial?▼

Participants received 10 acupuncture sessions over 5 weeks (biweekly).

Were there any side effects of acupuncture?▼

No severe adverse events emerged throughout the study.

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References

  1. 1.Li J, Liu Z, Li L, Xia M, Chen X, Mei Y, Zhang Y, Chen Y. "Efficacy of Acupuncture for Insomnia After Chemotherapy in Breast Cancer: A Randomized Sham-Controlled Trial.." Nature and science of sleep, 2026. PMID: 42572762 DOI: 10.2147/NSS.S604964
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.