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Related Experiment Videos

Dementia-free centenarians.

Thomas Perls1

  • 1Geriatrics Section, Department of Medicine, Boston University School of Medicine and Boston Medical Center, Boston, MA 02118, USA. thperls@bu.edu

Experimental Gerontology
|December 8, 2004
PubMed
Summary
This summary is machine-generated.

Centenarians show remarkable cognitive resilience, with many remaining cognitively intact or delaying dementia onset. This highlights their potential as a model for understanding resistance to cognitive decline.

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Area of Science:

  • Gerontology
  • Neuroscience
  • Genetics

Background:

  • Only 15-25% of centenarians are cognitively intact.
  • 90% of non-intact centenarians delay dementia onset until at least age 92.

Purpose of the Study:

  • To review findings on dementia prevalence and incidence in exceptionally long-lived individuals.

Main Methods:

  • Review of worldwide centenarian studies.

Main Results:

  • Some centenarians show no neurodegenerative disease.
  • Centenarians with Alzheimer's markers may not exhibit clinical dementia, suggesting cognitive reserve.
  • Epigenetic studies indicate a familial component to longevity and cognitive advantages.

Conclusions:

  • Centenarians serve as a valuable human model for studying resistance to dementia.