Healthy Brain Aging: What SuperAgers Do Differently

A small group of people in their eighties scores on memory tests like people 20 to 30 years younger. Researchers at Northwestern University have been studying this group for years. They call them SuperAgers. The team wants to know why healthy brain aging happens for some people and not others.

You’d probably guess the answer is good genes. One small Northwestern study suggests that isn’t the whole story. The patterns researchers keep finding look far more ordinary. And more within reach than you’d expect.

Here’s what the research really supports. Here’s what is still just a link and not a cause. And here’s how to build it into your week.

What Healthy Brain Aging Actually Means

Here’s what’s actually happening. A SuperAger is an adult over 80 with event memory as good as someone 20 to 30 years younger. Event memory is your recall for things that happened to you. They also score at least average for their age on other thinking tests.

The program sets its bar with standard memory tests. That means holding a list of words in mind, waiting, then pulling them back out. A 2022 study of the same group compared 56 SuperAgers with 23 peers of similar age.

The SuperAgers did better on attention, working memory and naming. They showed no edge in processing speed or abstract reasoning. So their memory strength was not just a faster brain all round.

Attention and planning scores explained only about 20% of the variation in memory performance across everyone studied. Roughly four-fifths came from something else. That gap is where the lifestyle questions live. Most brain health advice stops right at the edge of it.

It’s Not Just Lucky Genes

There’s an obvious answer for a sharp 85-year-old: lucky DNA. Northwestern researchers tested that idea. They built a combined score of common Alzheimer’s risk genes. Then they compared 37 SuperAgers with 35 peers who had average memory.

In that one small study, the two groups did not differ much. A memory edge did not track with lower common gene risk. The authors were direct about it. Unusually successful cognitive aging cannot simply be explained by low polygenic risk for Alzheimer’s, as measured by common gene variants, they wrote.

Read that carefully. It does not say genes don’t matter. Rare protective variants are still possible, and the authors say so themselves. Nor does it prove habits caused anything either. But for healthy brain aging, this is the useful part. It knocks out the first explanation most of us reach for.

The Riskiest Habit Mix Isn’t the One You’d Guess

Guidance on healthy brain aging usually treats risk factors as a flat list. Real life doesn’t work that way. Habits clump together. And the clumps seem to matter more than any single item.

A 2026 study of nearly 247,000 adults followed Dutch participants for about a decade. Researchers sorted ten changeable risk factors into groups. Four patterns showed up in midlife. Later in life the same four appeared. The one change: physical inactivity was folded into the loneliness-and-low-mood group. That combined cluster carried the most risk. Here are the later-life groups:

• Heart and metabolic: obesity, high blood pressure, diabetes
• Substance use: smoking, heavy drinking
• Lonely, low mood and inactive: loneliness, depression, little movement
• Lower risk: few or none of the above

Later in life, the lonely and inactive group had the highest dementia risk. Its hazard ratio was 1.23. A hazard ratio compares how often dementia developed over time in one group versus another. Above 1 means more risk. Substance use came in at 1.16. The heart and metabolic group was 1.12. So the cluster built around loneliness, low mood and inactivity carried more risk. It beat the cluster built around blood pressure, diabetes and obesity. Our guide to visceral fat and dementia covers that cluster.

That’s one of the most useful findings for healthy brain aging in years. And it’s rarely reported. If you can only change two things this month, start with the pair that travels together. Loneliness, low mood and inactivity clump. The study can’t show that fixing one fixes the others. But starting with the pair you already have is a sensible place to begin.

Why Connection Has the Strongest Number in the Room

The brain health world can sound a little dismissive about friendship. It gets filed under nice-to-have. The data disagrees.

A 2024 pooled analysis of more than 600,000 people combined 21 studies. Loneliness was tied to about 30% higher risk of dementia. For vascular dementia, the type tied to blood vessels, the figure was 74% higher. The link held even in models that adjusted for depression and/or for how alone people actually were.

That fits with the 247,000-person Dutch cohort, where the lonely and inactive group carried the highest risk. It also fits with the 2024 Lancet Commission, which lists social isolation as one of 14 changeable factors.

That last detail matters more than it sounds. Loneliness and being alone are not the same thing. You can live solo and feel deeply connected. You can be surrounded by people and still feel lonely. The felt version seems to carry the signal.

On the flip side, these are studies that watch people over time. They are not experiments. The effect sizes vary too. Some pooled analyses of other cohorts have found the link is real but smaller, and weaker once low mood is taken into account. So treat connection as a real lever, not a guarantee.

If you act on one item in this guide to healthy brain aging, make it this one. A short phone call counts. So does a standing walk with a neighbor. More low-effort starting points are in our guide to social connection for loneliness.

Move More, But Don’t Chase Intensity

Exercise has the best reputation and the messiest evidence. Both are worth knowing.

The National Institute on Aging makes the case carefully. Activity is linked to better brain health. One trial showed exercise can grow a memory-related brain area. The same page says more research is needed. That hedge isn’t padding.

Brain size is where things get strange. In the Generation 100 trial, researchers ran five years of exercise programs, then checked again four years later. The hardest-training group lost more memory-area volume than the control group. The group that followed standard activity guidelines lost the least.

Function tells a cleaner story. A 2026 trial split 142 healthy adults aged 63 to 78 into four groups. Six months of language learning kept a small brain area stable. Aerobic exercise improved one specific memory skill. Only the combined group got both.

For healthy brain aging, that points somewhere practical. Move at a moderate pace most weeks. Then pair it with something mentally hard.

Eat and Sleep Like It Matters

Diet is the messiest part of healthy brain aging. The headlines run ahead of the trials. Here’s the honest version.

Mediterranean-style and MIND-style eating keep showing up in studies with lower dementia rates. MIND blends the Mediterranean diet with the DASH diet for blood pressure. Both lean on greens, beans, nuts, olive oil, fish and whole grains. Our guide to the MIND diet and brain aging walks through that trial evidence.

However, when MIND was tested in a controlled trial, the benefit was small. It looked a lot like a control diet with mild calorie limits. The National Institute on Aging calls the diet evidence mixed. It also states plainly that no vitamin or supplement is recommended for preventing Alzheimer’s or other forms of cognitive decline.

Recent trials suggest a daily multivitamin may give a small memory benefit in older adults. That’s a possible small gain, not brain protection. No supplement has been shown to prevent Alzheimer’s or cognitive decline.

So why bother with diet? Because the same pattern protects your heart and blood vessels. And your brain rides on those. Eat this way for the blood flow. Treat the brain benefit as a bonus.

Sleep is simpler and better supported. Most adults need seven to nine hours. Mayo Clinic notes that poor sleep has been linked to memory problems, and that loud snoring can be a sign of sleep apnea.

That last one is easy to skip. It’s also treatable. If you wake up unrefreshed most days, say so at your next visit.

Four Risks Most Articles Skip

Most healthy brain aging advice stops at diet, exercise and sleep. The 2024 Lancet Commission goes wider. It lists 14 changeable risk factors. It puts the share of cases tied to them at about 45%. That’s a model built on studies that watch people, not a promise. And the other 55% is not fully changeable. Some of it is age and genes. Some is simply factors we don’t yet understand.

• Hearing loss. Population studies keep ranking it among the largest single contributors, and the Lancet Commission includes it among the 14 factors. Untreated hearing loss has also been associated with poorer memory and attention. Over-the-counter hearing aids are now legal in the US, which changed the cost picture.
• Untreated vision loss. Also on the list. If small print has quietly gotten harder, book an eye exam.
• Air pollution. Also on the list, and relevant if you live near heavy traffic. This one is mostly about policy and where you live rather than a personal habit.
• Head injury. Protecting your head is a real brain habit. Helmets, seat belts and fall-proofing count more than people think.

Those four items rarely make the healthy brain aging conversation. They belong in it.

Your Brain Health Self-Audit

A flat checklist invites you to do the easy items and skip the rest. A group audit works better. Score each line: 0 for not at all, 1 for sometimes, 2 for most weeks.

• Connection: did I have a real talk with someone this week?
• Movement: did I get about 150 minutes of moderate activity?
• Challenge: am I learning something truly new right now?
• Senses: when was my last hearing or vision check?
• Blood pressure: have I had it checked in the past year? Here’s how to check it at home.
• Sleep: am I getting seven to nine hours most nights?
• Medicines: has anyone reviewed my full list in the past year?

Any line that scores zero goes to the top of your list. Notice the pattern the Dutch cohort found, too. Loneliness, low mood and inactivity travel together. It may help to look at them as one problem, not three.

A realistic healthy brain aging plan starts where your lowest score sits. Not where you feel most comfortable.

Structure Beats Willpower

The LatAm-FINGERS trial gave 1,065 adults aged 60 to 77 either a structured program or flexible health advice. The structured group improved more over two years. About 72% stuck with it. Not perfect, and it still worked. Three-quarters of the people in the trial were women.

So write the plan down. Put it in the calendar. Tell someone else about it. That’s the gap between a wish and a result.

Your Medicine Cabinet Deserves a Second Look

This is the piece of healthy brain aging that people skip. It can also be one of the most useful things to raise with a clinician. The National Institute on Aging names drug classes that can cloud thinking in older adults. The list includes allergy pills, sleep aids, antipsychotics, muscle relaxants, bladder-control drugs, and pills for stomach or bladder cramps.

None of that means you should stop anything. It means you should ask. Bring your full list. Include supplements and over-the-counter sleep aids. Then ask one clear question. Could any of these be affecting my memory or my sleep?

Do not stop a prescribed medicine on your own. That warning comes straight from the NIA, and it exists for good reason.

If you help care for an aging parent, one more item belongs here. Delirium is a sudden fog of confusion. It often shows up during a hospital stay. It is also linked to thinking problems afterward. Ask what can be done to prevent it before any planned admission.

The Bottom Line

Now, you might be wondering if any of this matters once you’re in your sixties or seventies. The evidence is hopeful. LatAm-FINGERS enrolled 1,065 adults aged 60 to 77 who were already at high risk. Both groups got lifestyle advice. The structured group improved more, by about 0.11 SD per year. That’s a difference in how change gets delivered. It isn’t proof that starting late reverses anything.

There’s another hopeful signal. A 2026 study followed 2,370 adults aged 55 to 92. Both the onset and the reduction of these risk factors were linked to measurable differences in self-reported thinking. Diabetes, hearing and vision problems, inactivity, low mood and loneliness all showed up. Self-report is weaker than an objective test. But the direction is encouraging.

Healthy brain aging is not one decision. It’s a group of ordinary ones, repeated for years. Call someone. Walk. Learn something that makes you feel a little slow at first. Check your hearing. Know your blood pressure.

SuperAgers aren’t a different species. They’re a reminder that a sharp memory at 85 isn’t purely luck. The ordinary habits researchers keep circling back to are worth investing in. Even while the science is still catching up on why.