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‹ Sun · 26 Jul 2026
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Neuropathology in a diverse cohort of oldest-old: The LifeAfter90 study.

Studying the oldest-old and diverse populations reveals how brain changes vary widely in extreme age, improving understanding of when dementia develops.

This report from the LifeAfter90 study characterizes neuropathological findings in a diverse cohort of adults aged 90+ with ante-mortem cognitive assessment, addressing the under-representation of oldest-old and diverse populations in dementia neuropathology research. The study reveals heterogeneous, multi-pathology profiles in the extreme elderly, with implications for understanding successful cognitive aging and establishing age-appropriate diagnostic criteria.

What the study was

Study design
Prospective neuropathological cohort
Population
Diverse cohort of oldest-old adults (age 90+) enrolled in the LifeAfter90 study; neuropathological examination at autopsy
Category
Other
Maturity
Exploratory
Journal
Alzheimer's & Dementia

Why it surfaced

Prospective neuropathological cohort in diverse oldest-old population from Alzheimer's & Dementia; high-impact journal; addresses understudied demographic with implications for cognitive aging research.

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