Cited by 42Dementia and Cognitive Impairment ResearchSleep and related disordersSleep and Wakefulness Research

Self-reported sleep disturbance and incidence of dementia in ageing men

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Luojus, Maria K, Lehto, Soili M, Tolmunen, Tommi, Brem, Anna-Katharine, Lönnroos, Eija, Kauhanen, Jussi·2017·Journal of Epidemiology and Community Health

Abstract

Background: Sleep disturbance is suggested to contribute to the development of dementia. However, prospective longitudinal data from middle-aged populations are scarce. Methods: We investigated a population-based sample of 2386 men aged 42–62 years at baseline during 1984–1989. Participants having a history of mental illnesses, psychiatric medication, Parkinson's disease or dementia within 2 years after baseline (n=296) were excluded. Difficulty falling asleep or maintaining sleep, sleep duration and daytime tiredness were enquired. Dementia diagnoses (n=287) between 1984 and 2014 were obtained through linkage with hospital discharge, national death and special reimbursement registers. Cox proportional hazards analyses were performed for all dementias, and separately for Alzheimer's disease (n=234) and other phenotypes (n=53). Additional analyses were performed on a subsample of an apolipoprotein E (APOE) genotype-tested population (n=1199). Results: The risk ratio for dementia was 1.58 (95% CI 1.10 to 2.27) in men with frequent sleep disturbance after adjustments for age, examination year, elevated depressive symptoms, physical activity, alcohol consumption, cumulative smoking history, systolic blood pressure, body mass index, low-density lipoprotein and high-density lipoprotein cholesterol, high-sensitivity C reactive protein, cardiovascular disease history, education years and living alone. Daytime tiredness and sleep duration were not associated with dementia in adjusted analysis. In the APOE subsample, both APOE ε4 genotype and frequent sleep disturbance were associated with increased dementia risk, but in the interaction analysis they had no joint effect. Conclusions: Self-reported frequent sleep disturbance in middle-aged men may relate to the development of dementia in later life. Having an APOE ε4 genotype did not affect the relationship.

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  • No studies reported those who developed dementia soon after sleep duration ascertainment separately from those who developed it after longer periods.

    “Some studies are noteworthy because of longer follow-up but no studies reported those who developed dementia soon after sleep duration ascertainment separately from those who developed it after longer periods. (280, 296-301)”

    From Dementia prevention, intervention, and care: 2024 report of the Lancet standing Commission (2024) · cites this paper as [297]

    The Study population section (page unavailable) reports a mean follow-up of 21.9 years and says men diagnosed with dementia within two years of baseline were excluded. This study therefore did not report early and later diagnoses separately, but it cannot establish the broader claim that no studies did so. (LLM, conf=0.78)

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Authors
Luojus, M. K., Lehto, S. M., Tolmunen, T., Brem, A.-K., Lönnroos, E., & Kauhanen, J.
Affiliations
  • University of Eastern Finland (FI)
  • Beth Israel Deaconess Medical Center (US)
Corresponding author
Luojus, Maria K
Venue
Journal of Epidemiology and Community Health
Publisher
BMJ
Published
2016-10-18
Volume
71
Issue
4
Pages
329-335
ISSN
  • 0141-7681 (ISSN-L)
  • 0143-005X
  • 1470-2738
OpenAlex
W2538275997
Cited by
42
References
58
Citations by year
2026: 3 · 2025: 4 · 2024: 11 · 2023: 4 · 2022: 7 · 2021: 3 · 2020: 3 · 2019: 3 · 2018: 2 · 2017: 2
FWCI
2.08
Type
journal article
Language
en
Open access
Licence
other-oa
Locations
  • Journal of Epidemiology & Community Health (publishedVersion)
  • PubMed (publishedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion, other-oa)
  • Max Planck Digital Library (submittedVersion, other-oa)
  • HighWire Press Open Archive (submittedVersion)
Funders
  • Juho Vainion Säätiö
  • Paulon Säätiö
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
Keywords
sleep disorders, dementia, Alzheimer's disease, middle-aged men, APOE ε4 genotype, sleep duration, daytime fatigue, dementia risk, apolipoprotein E
MeSH terms
Adult, Aging, Dementia, Depression, Humans, Male, Middle Aged, Risk Factors, Sleep, Incidence, Sleep Disorders, Circadian Rhythm, Self Report

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