Meta-analysis of Stellate Ganglion Block shows improved sleep metrics in patients with sleep disturbancesCould a simple nerve block help you sleep longer and deeper?

Frontiers in Medicine Published April 6, 2026 DOI ↗ Editorial oversight: Dr. Ji-eun Park, MD · Brain, Mind & Pain

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Key Takeaway

Note that SGB shows promise for sleep disturbances, but safety and long-term efficacy require further high-quality evidence.

This systematic review and meta-analysis examined the efficacy of Stellate Ganglion Block (SGB) for sleep disturbances. The review synthesized data from seven studies comparing SGB to control groups, though specific participant demographics and settings were not fully reported. The study phase was not explicitly defined in the available data.

The primary outcome measured was total sleep time, which showed a statistically significant increase with a weighted mean difference (WMD) of 60.86 (95% CI, 38.05 to 83.66; P < 0.001). Secondary outcomes also favored the intervention: Pittsburgh Sleep Quality Index (PSQI) scores decreased by a WMD of -1.22 (95% CI, -1.80 to -0.65; P < 0.001), sleep onset latency reduced by a WMD of -1.59 (95% CI, -2.48 to -0.69; P < 0.001), and deep sleep quality enhanced with a WMD of -1.42 (95% CI, -1.95 to -0.89; P < 0.001). Absolute numbers for these outcomes were not reported.

Safety and tolerability data were not reported in the included studies, and no adverse events or discontinuations were detailed. The authors note that the evidence is constrained by a lack of high-quality studies, incomplete participant demographic data, and insufficient long-term follow-up. Consequently, the certainty of the findings remains uncertain.

While SGB demonstrates promise in alleviating sleep problems based on these metrics, the authors suggest a need for extended follow-up and multicenter randomized controlled trials. Potential synergies with cognitive behavioral therapy for insomnia (CBT-I) are noted as an area for future investigation. Clinicians should interpret these results cautiously given the current limitations in study quality and duration.

Imagine finally getting a full night of rest after struggling for years. A recent systematic review looked at seven studies involving patients who received a Stellate Ganglion Block, a procedure that numbs a nerve cluster in the neck. The goal was to see if this could fix sleep disturbances. The results were clear: patients slept longer overall and fell asleep faster than those in the control group. They also experienced improved deep sleep quality and lower scores on standard sleep quality tests.

The review found that these improvements were statistically significant, meaning the changes were real and not just random chance. Yet, the picture is not complete. The studies did not report on safety issues or how patients felt months later. Without long-term follow-up, we do not know if the benefits last or if side effects appear over time. We also lack clear information about the specific types of patients who were studied.

While this approach shows promise for alleviating sleep problems, it is not a guaranteed cure for everyone. The evidence is currently based on a mix of lower-quality studies with incomplete data. Experts suggest that more rigorous, large-scale trials are needed before this becomes a standard recommendation. Until then, it remains an option worth discussing with a doctor, but not a definitive solution.

What this means for you:

A nerve block may improve sleep, but more long-term safety data is needed.

Study Details

Study typeMeta analysis

EvidenceLevel 1

PublishedMar 2026

View Original Abstract ↓

BackgroundSleep is essential for optimal health; however, the prevalence of poor sleep, characterized by disrupted patterns and qualities, adversely affects psychological well-being and cognitive function. This issue is prevalent, yet it is frequently underdiagnosed and inadequately managed. Current therapeutic options exhibit notable limitations. The Stellate Ganglion Block (SGB) may alleviate sleep disturbances through various physiological mechanisms; however, its safety and efficacy remain subjects of ongoing debate. This meta-analysis systematically evaluates the efficacy of SGB using objective metrics to provide high-quality clinical evidence and to inform future research directions.MethodsLiterature searches were conducted in PubMed, Web of Science, Embase, the Cochrane Library, OVID, and Google Scholar from database inception to June 2025. Analyses were performed with RevMan 5.4 software, and the study was registered on PROSPERO (CRD420251040732) .ResultsSeven studies met the inclusion criteria. In comparison to the control group, patients who received the SGB demonstrated a statistically significant increase in total sleep time (WMD: 60.86; 95% CI, 38.05 to 83.66; P < 0.001). Additionally, these patients exhibited lower scores on the Pittsburgh Sleep Quality Index (PSQI) (WMD: -1.22; 95% CI, -1.80 to -0.65; P < 0.001), reduced sleep onset latency (WMD: -1.59; 95% CI, -2.48 to -0.69; P < 0.001), and enhanced deep sleep quality, as indicated by lower scores on the deep sleep quality assessment (WMD: -1.42; 95% CI, -1.95 to -0.89; P < 0.001).ConclusionThe SGB shows promise in alleviating sleep problems. However, a lack of high-quality studies, insufficient long-term follow-up, and incomplete participant demographic data limit the existing evidence. There is a pressing need for extended follow-up and multicenter randomized controlled trials (RCTs). Future research should explore the potential synergies between stellate ganglion block and cognitive behavioral therapy (CBT-I) for sleep disorder to assess the sustainability of its efficacy and to expand the population that may benefit from this intervention.Systematic Review Registrationhttps://www.crd.york.ac.uk/prospero/, identifier CRD420251040732.

Meta-analysis of Stellate Ganglion Block shows improved sleep metrics in patients with sleep disturbancesCould a simple nerve block help you sleep longer and deeper?

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