Evidence map›Paper›PMID 40782185›Full record

SynthesisSleep & breathing = Schlaf & Atmung2025

Are sleep disturbances modifiable risk factors for mild cognitive impairment and dementia? A systematic review of large studies.

Giusy Bergamo, Claudio Liguori

Abstract readSystematic Review
In one paragraph

Synthesis in Sleep & breathing = Schlaf & Atmung, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

7 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Night-to-night rapid eye movement sleep variability: A relevant marker of early amyloid-β deposition.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Observational
  5. Review
  6. Article
  7. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors.

Giusy BergamoDepartment of Systems Medicine, University of Rome Tor Vergata, Rome, Italy.
Claudio LiguoriDepartment of Systems Medicine, University of Rome Tor Vergata, Rome, Italy. dott.claudioliguori@yahoo.it.ORCID 0000-0003-2845-1332

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Studies have shown a connection between sleep disorders, mild cognitive impairment and dementia. In this context, the present systematic review aimed to determine in large studies whether sleep disturbances are modifiable risk factors for cognitive decline. Following the application of inclusion and exclusion criteria, this systematic review selected 15 studies, with large cohort of subjects included (more than 1000 participants), who were longitudinally observed. Studies predominantly used questionnaires and interviews to collect subjective data on sleep. Eleven studies were based on subjective measurements, one was based on the International Classification of Diseases - 9th Edition diagnosis codes, and three based on objective actigraphic measurements. No study used polysomnographic assessments for the evaluation of sleep disorders.The results of this systematic review showed that extreme sleep durations (either too short or too long), daytime sleepiness, circadian sleep-wake cycle disruption, and variation in sleep patterns are factors associated with an increased risk of developing cognitive decline and dementia. Actigraphy, as an objective instrument for monitoring the sleep-wake rhythm, provided further insights into the association between sleep problems and longitudinal cognitive decline. These findings emphasize the strong connection between sleep disturbances, circadian rhythm, and the risk of developing dementia and Alzheimer's disease (AD). Sleep disorders may serve as an early indicator for cognitive decline, also considering that they may represent a modifiable risk factor for dementia. Therefore, recognition and treatment of sleep problems should be included in the prevention strategies against cognitive decline, opening up new opportunities for the prevention and treatment of cognitive impairment and AD.

Indexed as

Cognitive DysfunctionDementiaSleep Wake DisordersAgedHumansRisk FactorsActigraphyAlzheimer's diseaseAlzheimer’s diseaseCognitive dysfunctionSleepSleep durationSleep qualitySleep wake disorders

Identifiers

PMID40782185
PMCPMC12335385

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.