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Short-sleep insomnia is associated with altered gut microbiota composition, elevated serum 5-HT, BDNF, and orexin A, and disrupted sleep architecture

In a real-world study, patients with short-sleep insomnia showed significantly reduced sleep efficiency, total sleep time, and NREM/REM sleep durations, alongside prolonged sleep latency and increased wake after sleep onset. Serum levels of 5-HT, BDNF, and orexin A were elevated, and gut microbiota beta-diversity differed from controls, with increased abundance of Evtepia, Anaerostipes, and Blautia_A. Correlation analyses linked gut microbiota, sleep parameters, and serum markers, particularly involving N3 sleep and sleep latency.

1 min read•Updated Aug 29, 2026•0 RCTs•View structured evidence →
Evidence Score32/100
Human RCT☆☆☆☆☆
Meta-analysis☆☆☆☆☆
Mechanism★★★★★
Safety★★★★☆
Confidencelow

This article is automatically generated from the structured evidence profile behind the claim above. Scores reflect the quality and quantity of available research, not clinical advice.

Short-sleep insomnia is associated with altered gut microbiota composition, elevated serum 5-HT, BDNF, and orexin A, and disrupted sleep architecture The current body of evidence comprises 1 study. EvidenceHub rates the overall confidence at 32/100 (low).

The Claim

Short-sleep insomnia is associated with altered gut microbiota composition, elevated serum 5-HT, BDNF, and orexin A, and disrupted sleep architecture

This conclusion is most relevant to: Patients with short-sleep insomnia and healthy controls.

What the Research Shows

The conclusion draws on 1 linked study. Highlights from the cited literature:

  • ▸Correlation study of polysomnographic parameters, serological markers, and gut microbiota in patients with short-sleep insomnia: a real-world study. (Frontiers in microbiology, 2026) — In a real-world study, patients with short-sleep insomnia showed significantly reduced sleep efficiency, total sleep time, and NREM/REM sleep durations, alongside prolonged sleep latency and increased wake after sleep onset. Serum levels of 5-HT, BDNF, and orexin A were elevated, and gut microbiota beta-diversity differed from controls, with increased abundance of Evtepia, Anaerostipes, and Blautia_A. Correlation analyses linked gut microbiota, sleep parameters, and serum markers, particularly involving N3 sleep and sleep latency.

How It Works

The proposed biological pathway:

  • ▸Altered gut microbiota composition (increased Evtepia, Anaerostipes, Blautia_A) may influence the microbiota-gut-brain axis
  • ▸Elevated serum 5-HT, BDNF, and orexin A reflect changes in neurotransmitter and neurotrophin signaling
  • ▸These changes correlate with disrupted sleep architecture, particularly reduced N3 sleep and prolonged sleep latency
  • ▸Result: Short-sleep insomnia is associated with a distinct gut-brain-serum profile, suggesting potential therapeutic targets

Who Might Benefit

Evidence fit by population:

  • ▸Patients with short-sleep insomnia and healthy controls

Limitations & Caveats

Important context when interpreting this evidence:

  • ▸Observational design cannot establish causality
  • ▸Real-world study with potential confounding factors not fully controlled
  • ▸Sample size not specified in abstract
  • ▸No longitudinal follow-up to assess temporal relationships

Frequently Asked Questions

What is short-sleep insomnia?▼

Short-sleep insomnia is a subtype of insomnia characterized by objectively short total sleep time, typically less than 6 hours, along with difficulty initiating or maintaining sleep.

How does gut microbiota relate to sleep?▼

The gut microbiota can influence sleep through the microbiota-gut-brain axis, affecting neurotransmitter production and immune signaling, which may modulate sleep regulation.

What were the key serum markers altered in insomnia patients?▼

Serum 5-hydroxytryptamine (5-HT), brain-derived neurotrophic factor (BDNF), and orexin A were significantly elevated in insomnia patients compared to controls.

Could modulating gut microbiota be a treatment for insomnia?▼

The study suggests that gut microbiota modulation may be a potential therapeutic target, but further research is needed to establish causality and effective interventions.

References

  1. 1.Liu L, Zhou HJ, Li HC, Li MZ, Sun YL, Zhu JW, Wu JL, Lu ML, Yu Y, Han F, Pan L. “Correlation study of polysomnographic parameters, serological markers, and gut microbiota in patients with short-sleep insomnia: a real-world study..” Frontiers in microbiology, 2026. PMID: 42661649 DOI: 10.3389/fmicb.2026.1850738
Disclaimer: This article is auto-generated from structured research data 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.