Scientists at Northwestern University have spent 25 years studying 'SuperAgers' — adults over 80 whose memory rivals people decades younger. Studying 290 participants and 77 donated brains, researchers found two key mechanisms: some SuperAger brains simply resist forming Alzheimer's-linked plaques and tangles, while others form them but remain unaffected. Beyond biology, SuperAgers tend to be highly social and outgoing. These findings challenge the assumption that cognitive decline is inevitable with age and open the door to new interventions targeting brain resilience. The research was published in Alzheimer's & Dementia, offering hope that dementia prevention strategies could be built around the SuperAger neurobiological profile.
