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Health

Optimizing Cognitive Health: How Sleep Patterns Impact Aging Minds

December 7, 2023
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In a recent study published in the journal JAMA Network Open, researchers delved into the intricate connection between sleep patterns and age-associated cognitive changes among older adults (1). This investigation not only sheds light on the critical factors that precede cognitive decline but also emphasizes the potential for therapeutic interventions and preventive measures long before the onset of dementia.

Early Interventions Before the Onset of Dementia

Amyloid deposition, a precursor to cognitive impairment, can manifest up to 15 years before noticeable cognitive decline. This study aims to identify early factors that precede cognitive and functional deterioration, allowing for interventions and prevention long before dementia develops.

Examining the Link Between Cognitive Function and Sleep Duration

Researchers conducted a comprehensive analysis of data from the Seattle Longitudinal Study (SLS), examining cognitive function and self-reported sleep durations among older adults from 1997 to 2020. By enrolling participants from the Health Maintenance Organization (HMO) of Washington and the Group Health Cooperative (GHC) of Puget Sound, the team gathered demographic data, administered neuropsychological assessments, and evaluated sleep patterns longitudinally.

Link Between Sleep Patterns, Age, and Cognitive Impairment Risk

Out of 1,104 initially enrolled SLS participants, 826 individuals (mean age 76 years, 57% women, 26% APOE*E4 carriers) with complete data were included in the study. The results, determined through Cox proportional regression modeling, revealed significant associations between higher sleep variability, short sleep duration, and cognitive impairment. As age increased, cognitive decline became more pronounced.

Educational attainment and APOE*E4 carrier status were also linked to cognitive impairment. Incorporating sleep assessment parameters into the models highlighted the significance of short sleep durations and increased sleep variability in age-associated cognitive decay.

Impact of Sleep on Cognitive Health

Understanding the implications of sleep patterns on cognitive health is crucial for proactive well-being. The study findings underscore the need for prioritizing sleep quality and duration to support cognitive function as individuals age. Poor sleep patterns, characterized by short durations and increased variability, emerge as potential risk factors for cognitive decline.

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References:

  1. Longitudinal Sleep Patterns and Cognitive Impairment in Older Adults

    Keil SA, Schindler AG, Wang MX, et al. Longitudinal Sleep Patterns and Cognitive Impairment in Older Adults. JAMA Netw Open. 2023;6(12):e2346006, DOI: 10.1001/jamanetworkopen.2023.46006, https:jamanetwork.com/journals/jamanetworkopen/fullarticle/2812521

Source: Medindia

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