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[Subjective memory complaints (SMC)].

Toji Miyagawa, Atushi Iwata

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    |March 31, 2016
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    Summary
    This summary is machine-generated.

    Subjective memory complaints (SMC) in older adults signal future cognitive decline and dementia risk. Research shows SMC may indicate preclinical Alzheimer's disease (AD), even without current impairment.

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    Area of Science:

    • Neuroscience
    • Gerontology
    • Cognitive Psychology

    Background:

    • Subjective memory complaints (SMC) are prevalent in the elderly.
    • SMC are increasingly recognized as a risk factor for mild cognitive impairment (MCI) and dementia.
    • Evidence suggests SMC may be linked to preclinical Alzheimer's disease (AD) pathology.

    Purpose of the Study:

    • To highlight the significance of SMC beyond aging or depression.
    • To underscore the association between SMC and future cognitive decline.
    • To investigate underlying biological and clinical factors increasing cognitive risk in individuals with SMC.

    Main Methods:

    • Review of recent evidence on subjective memory complaints.
    • Analysis of studies linking SMC to cognitive impairment progression.
    • Exploration of neurobiological markers associated with SMC.

    Main Results:

    • SMC are a significant predictor of future MCI and dementia.
    • Individuals with SMC show increased Alzheimer's disease (AD) brain pathology, indicative of preclinical AD.
    • SMC represent a critical risk factor for cognitive decline.

    Conclusions:

    • Subjective memory complaints in cognitively intact elderly individuals warrant attention.
    • SMC may signify preclinical AD and increased risk for future cognitive decline.
    • Further research is needed to identify specific risk factors associated with SMC.