Association of Self-Reported Sleep Characteristics With Neuroimaging Markers of Brain Aging Years Later in Middle-Aged Adults

Clémence Cavaillès, Christina Dintica, Mohamad Habes, Yue Leng, Mercedes R. Carnethon, Kristine Yaffe

Research output: Contribution to journalArticlepeer-review

Abstract

Objectives To determine the association between early midlife sleep and advanced brain aging patterns in late midlife. Methods Using the CARDIA study, we analyzed sleep data at baseline and 5 years later, focusing on short sleep duration, bad sleep quality (SQ), difficulty initiating and maintaining sleep (DIS and DMS), early morning awakening (EMA), and daytime sleepiness. These were categorized into 0–1, 2–3, and >3 poor sleep characteristics (PSC). Brain MRIs obtained 15 years later were used to determine brain age through a machine learning approach based on age-related atrophy. Results This cohort study included 589 participants (mean age 40.4 ± 3.4 years, 53% women). At baseline, around 70% reported 0–1 PSC, 22% reported 2%–3%, and 8% reported >3 PSC. In multivariable linear regression analyses, participants with 2–3 or >3 PSC had 1.6-year (β = 1.61, 95% CI 0.28–2.93) and 2.6-year (β = 2.64, 95% CI 0.59–4.69) older brain age, respectively, compared with those with 0–1 PSC. Of the individual characteristics, bad SQ, DIS, DMS, and EMA were associated with greater brain age, especially when persistent over the 5-year followup. Discussion Poor sleep was associated with advanced brain age in midlife, highlighting the importance of investigating early sleep interventions for preserving brain health.

Original languageEnglish (US)
Article numbere209988
JournalNeurology
Volume103
Issue number10
DOIs
StatePublished - Oct 23 2024
Externally publishedYes

ASJC Scopus subject areas

  • Clinical Neurology

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