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Stanford Scientists Discover Resting Brain Activity May Predict Alzheimer's Years Before Memory Decline
ScienceAlert • • general
Key Points:
- Researchers at Stanford Medicine developed the Alzheimer's Resilience–Vulnerability Connectome (ARC), a brain scan-based score that distinguishes between individuals with Alzheimer's disease and SuperAgers, who maintain exceptional memory in old age.
- The ARC score, derived from functional MRI scans, reflects patterns of brain connectivity, with lower scores indicating SuperAger-like brain function and higher scores indicating Alzheimer's-like patterns.
- In a study of over 1,300 cognitively healthy adults, those with higher ARC scores experienced faster decline in memory and daily functioning and were more likely to develop Alzheimer's or mild cognitive impairment over 5-12 years.
- The ARC score improved prediction of Alzheimer's risk beyond traditional markers such as age, amyloid beta and tau protein levels, and genetic risk factors, potentially aiding early identification for prevention trials.
- Researchers emphasize the need for larger, diverse, prospective studies to validate ARC's predictive accuracy and clinical utility before it can be widely adopted.
