Modulation of the Cognition-Sleep Nexus in Subjective Cognitive Decline: A 12-Week, Randomized, Double-Blind, Placebo-Controlled Trial of a Standardized Cordyceps militaris Extract
Bibliographic record
Abstract
Subjective cognitive decline (SCD) and sleep disturbance form a vicious cycle, accelerating neurodegeneration. Cordyceps militaris (CM), a traditional medicinal fungus rich in nucleosides, possesses potent neuroprotective and adenosinergic (sleep-promoting) properties. We investigated the efficacy of a standardized CM extract on this cognition-sleep nexus in adults with SCD. This 12-week, single-center, randomized, double-blind, placebo-controlled, parallel-group trial was conducted in Palembang, Indonesia. We randomized 120 adults (aged 45-65) with SCD to receive 300 mg/day of a standardized CM mycelial extract (3% cordycepin) or a matching placebo. The primary outcome was the change from baseline in the Montreal Cognitive Assessment-Indonesian (MoCA-INA) score. Key secondary outcomes (Bonferroni-corrected) were the Pittsburgh Sleep Quality Index (PSQI), Rey Auditory Verbal Learning Test (RAVLT) Delayed Recall, and polysomnography (PSG)-derived Sleep Efficiency (SE). Analyses were performed on the Intention-to-Treat (ITT) population (N=120) using a Linear Mixed-Effects Model (LMM). The LMM analysis revealed a significant group-by-time interaction for the primary outcome, MoCA-INA (Adjusted Mean Difference [AMD]: +1.95 [95% CI: 1.10, 2.80], p < 0.001). The CM group also showed significant improvements in all three key secondary outcomes: PSQI (AMD: -2.90 [95% CI: -3.81, -1.99], p < 0.001), RAVLT Delayed Recall (AMD: +2.15 [95% CI: 1.30, 3.00], p < 0.001), and Sleep Efficiency (AMD: +5.8% [95% CI: 3.1, 8.5], p < 0.001). After FDR correction, significant benefits were also seen for processing speed, %REM sleep, and serum BDNF and hs-CRP. The intervention was well-tolerated. In conclusion, twelve weeks of supplementation with a standardized C. militaris extract significantly improved cognitive function, episodic memory, and both subjective and objective sleep in adults with SCD. These benefits were associated with enhanced neuroplasticity and reduced systemic inflammation, supporting its potential as a multi-target, disease-modifying intervention for this at-risk population.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.004 | 0.001 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.002 | 0.002 |
| Insufficient payload (model declined to judge) | 0.004 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".