Research Uncovers Factors Contributing to Exceptional Memory in SuperAgers

Some individuals in their 80s and 90s maintain memory as sharp as much younger adults. This phenomenon intrigues longevity enthusiasts and scientists alike. Traditionally, researchers have questioned if these ‘SuperAgers’ possess a genetic advantage, specifically a lower risk for Alzheimer’s.

A recent study explored this question. Teams from the Healthy Aging & Alzheimer’s Research Care (HAARC) Center at the University of Chicago and the Translational Genomics Research Institute (TGen) led the research. Their findings, published in Alzheimer’s Research & Therapy, indicate that SuperAgers do not differ from peers in terms of inherited Alzheimer’s risk genes.

Study Overview

Dr. Shoshana Ungerleider, an internal medicine physician at General Medicine and TED Health host, shared insights with Newsweek. The study focused on 231 adults aged 80 or older—142 SuperAgers and 89 with average memory. SuperAgers exhibited memory abilities comparable to those in their 50s and 60s.

Researchers analyzed the APOE gene, linked to Alzheimer’s risk, alongside three polygenic risk scores. These scores combine various genetic variants related to Alzheimer’s. Results showed similar APOE variants in both groups. Genetic risk scores failed to predict SuperAger status.

Furthermore, the team examined genetic ancestry and sought protective variants against Alzheimer’s. Yet, no meaningful differences emerged, as noted by Ungerleider, “No obvious genetic advantage.”

Beyond Genetics

Findings suggest that while some may escape Alzheimer’s due to low genetic risk, genetics alone do not account for outstanding memory in later life. “Genes linked to disease risk and those linked to exceptional memory may differ,” Ungerleider explained.

Ana Capuano, study co-first author and director of the biostatistics core at the HAARC Center, emphasized a comprehensive view of brain health. “Preserving cognitive health entails more than reducing Alzheimer’s risk,” Capuano stated. Other factors—biological, behavioral, social—might boost cognitive aging and inform personalized strategies for lifelong brain health.

Ungerleider highlighted additional research identifying potential factors influencing SuperAgers. These include brain structure differences, brain cell composition, and abnormal tau protein levels. Lifestyle aspects, such as education, physical exercise, mental challenges, and social interactions, could also contribute, regardless of genetic risk.

Study Limitations and Future Research

Ungerleider noted that the study’s scale was modest for genetic research, with assessments conducted only once. It excluded lifestyle, behavior, and blood vessel health factors, suggesting small genetic impacts might remain undetected.

“Alzheimer’s genetic risk scores can’t predict SuperAgers,” Ungerleider said. “They estimate disease risk but not exceptional cognitive aging. Genetics plays a limited, not predominant, role.”

Future research aims to integrate cognitive tests with brain imaging, blood biomarkers, genetics, immune profiling, sleep tracking, and social factors. Researchers seek to unravel what preserves memory in advanced age.

These findings share an encouraging message: memory decline isn’t unavoidable. Some manage to maintain youthful memory into their 80s and beyond.