Compression of Cognitive Decline and Cognitive Resilience in Extreme Longevity

Strategic Insights -

Researchers at Johns Hopkins University Bloomberg School of Public Health have conducted a study on the compression of cognitive decline and cognitive resilience in extreme longevity. The investigators used data from 13,999 deceased participants from the National Alzheimer's Coordinating Center cohort, including 8,146 with neuropathological data. The study found that individuals with longer lifespans, particularly centenarians, exhibited slower cognitive decline and shorter periods of cognitive impairment before death, although distinct cognitive trajectories existed among centenarians. Cognitive resilience also increased with longer lifespans, but associated factors varied. Apolipoprotein E e2 was associated with higher cognitive resilience only in centenarians.

Key Takeaways:

  • The study used data from 13,999 deceased participants from the National Alzheimer's Coordinating Center cohort, including 8,146 with neuropathological data.
  • Individuals with longer lifespans, particularly centenarians, exhibited slower cognitive decline and shorter periods of cognitive impairment before death.
  • Cognitive resilience increased with longer lifespans, but associated factors varied.
  • Apolipoprotein E e2 was associated with higher cognitive resilience only in centenarians.
  • The study found that the relationship between neuropathological burden and dementia risk attenuated with longer lifespans, indicating greater cognitive resilience in individuals with extreme longevity.
  • The associations of both genetic and modifiable factors with cognitive resilience varied by lifespan.
  • The study used a median follow-up period of 4.9 years and evaluated cognitive trajectories before death.
  • The study identified distinct cognitive trajectories among centenarians, suggesting a complex relationship between cognitive decline and resilience in extreme longevity.

Statistics:

  • 13,999 deceased participants from the National Alzheimer's Coordinating Center cohort used in the study.
  • 8,146 participants with neuropathological data included in the study.

*median follow-up period of 4.9 years for cognitive function assessment.

  • 50-100+ years: lifespan groups evaluated in the study.
  • 21(10): issue number of the journal Alzheimer's & Dementia where the study was published.
  • Compression of cognitive decline and cognitive resilience in extreme longevity: the title of the study.

Sources:

  • Compression of cognitive decline and cognitive resilience in extreme longevity. Alzheimer's & Dementia, 2025;21(10).
  • National Alzheimer's Coordinating Center cohort.
  • National Institutes of Health: financial support for the study.
  • Johns Hopkins University Bloomberg School of Public Health: institution where the study was conducted.
  • Wenjie Cai, Dept. of Epidemiology, Johns Hopkins University Bloomberg School of Public Health: lead author of the study.
  • Wenxin Zhang, Yiwen Zhang, Albert Hofman, Anand Viswanathan, Susanne J. van Veluw, Deborah Blacker, Sudeshna Das, and Yuan Ma: additional authors of the study.
  • Alzheimer's & Dementia: journal where the study was published.
  • Wiley: publisher of the journal Alzheimer's & Dementia.