When Sandra Weintraub, a professor of psychiatry and behavioral sciences at the Northwestern University Mesulam Center in Chicago, noticed people’s memory starting to decline as early as their 40s, she got curious about something else: why do some folks stay mentally sharp in old age, sharper than many people decades younger? That question drew her to people whose brains seemed to defy the usual rules of aging.
She started hunting for answers right there in Chicago. Teaming up with colleague Marsel Mesulam, she spotted people over 80 whose memory matched that of adults 20 to 30 years younger. In some cases, it rivaled people in their 50s or even younger adults. That’s how research into SuperAgers took off—a group of exceptional older adults proving that brains don’t all age the same way.
Older Adults Who Remember More Than Their Peers
To qualify as a SuperAger, someone has to ace a straightforward but tough test. From a list of 15 words, they need to recall at least 9—about as well as someone 20 to 30 years younger. Some even match much younger adults.
“Their memory is at least as good as somebody in their 50s,” Weintraub said. “And some of them have memory like a 20-year-old.”
People like this are incredibly rare. Researchers spot them not by how young they feel, but through rigorous memory tests and long-term tracking. Molly Mather, a team researcher, once watched a participant nail a handstand in the office—at an age when most folks are more worried about staying upright than showing off acrobatics.
No Single Recipe for Keeping the Brain Young
You might figure SuperAgers follow some magic lifestyle routine. Not quite. Some puff cigars daily, others steer clear. Some sip whiskey, others skip it entirely. Some hit the gym regularly, while others don’t.
The one thing that pops up consistently is sociability. SuperAgers tend to be outgoing types who stay connected and engaged with life, instead of fading into the woodwork. Back in 2013, when they wanted a celebration, their message to the researchers was blunt: “We want to have a party… We want wine, and we want to dance and [have] music.”
But sociability is just the most obvious trait, not the full story. When scientists dug deeper into their brains, it turned out SuperAgers also differ biologically from typical older adults.
It’s Not Just Social Life—Their Brains Have Unique Features
Researchers discovered that SuperAgers often keep a better-preserved brain structure. Put simply, their brains don’t shrink as much in key areas for memory and cognition.
Their cholinergic system stands out too. This network relies on acetylcholine, a chemical crucial for memory, attention, and learning. In Alzheimer’s disease, it’s often compromised. But in SuperAgers, it’s more robust, giving their brains stronger support for processing and storing info.
They also pack more von Economo neurons in their brains. These specialized cells handle social behavior, quick decisions, and complex info processing—which lines up perfectly with SuperAgers being socially active and mentally engaged.
Inflammation tells another story. In the brain’s white matter, SuperAgers show less inflammatory activity from microglia—the brain’s immune cells. Think of microglia as security guards: helpful in moderation, but trouble if they go overboard and start harming tissue.
Why Their Brains Resist Alzheimer’s-Like Changes
The biggest surprises came from studying SuperAgers’ brains after death. They often carry hallmarks of Alzheimer’s, like amyloid and tau proteins that damage nerves and erode memory.
Yet SuperAgers took two paths. Some seem highly resistant, with far fewer of these proteins. Others have them but don’t show the expected memory or thinking decline.
It’s not just sharp recall that sets them apart. Their brains harness multiple defenses: preserved structure, a beefier memory system, extra specialized neurons, and dialed-down inflammation.
Why Recalling 9 Words Matters So Much to Scientists
It seems like a basic memory test: hear 15 words, then recall as many as possible after a delay. But when an 80-something nails at least 9, it signals way more than good recall—it hints at a brain aging differently from the norm.
SuperAging and dementia mark the extremes of brain aging. Dementia isn’t normal—it’s a disease that robs independence. SuperAging proves sharp memory decline isn’t inevitable with age.
