SuperAgers' Memory Edge Not Genetic, Study Finds
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- Emily Rogalski's team at the University of Chicago's HAARC Center, working with the Translational Genomics Research Institute (part of City of Hope), studied 142 SuperAgers and 89 cognitively average older adults across five U.S. and Canada sites — the largest prospectively enrolled SuperAging cohorts tested with modern Alzheimer's genetic measures.
- Published in Alzheimer's Research & Therapy, the study found that SuperAgers' APOE genes and Alzheimer's polygenic risk scores matched those of cognitively average peers, meaning genetic testing could not distinguish the two groups.
- Rare genetic variants previously linked to Alzheimer's resilience were also not more common among SuperAgers, reinforcing that inherited DNA does not account for the SuperAging phenotype.
- Co-first author Ana Capuano said the findings reinforce that preserving cognitive health involves more than reducing Alzheimer's disease risk alone, calling for study of biological, behavioral, and social protective factors.
- Planned follow-up research will combine cognitive testing with brain imaging, blood biomarkers, immune profiling, sleep and activity monitoring, and social and environmental measurements to find the still-unknown protective forces.
- The work was supported by the National Institute on Aging (U19AG073153), the McKnight Brain Research Foundation's SuperAging Research Initiative, and the Simons Foundation.
Why it matters: The finding dismantles a 20-year-old assumption that SuperAgers simply inherit fewer Alzheimer's risk variants, pushing the field toward protective-factor models across biology, environment, and behavior — meaning cognitive resilience cannot be screened via a simple genetic test, and aging interventions must look beyond disease-risk reduction to identify what actually preserves memory.
