Your brain can get stronger at 75 than it was at 65. That’s not a motivational poster. That’s what researchers found after tracking 2,802 older adults for two decades in the largest cognitive training trial ever conducted.
The study that changed the conversation
The ACTIVE Study (Advanced Cognitive Training for Independent and Vital Elderly) followed participants across six US sites from 1998 to 2019. Three groups received different types of training: memory, reasoning, or speed of processing. A fourth group got nothing.
Only one type made a dent in dementia rates.
Speed of processing training — where participants identified visual details on a screen while managing increasingly complex tasks in shrinking time windows — reduced dementia incidence by 25% over 20 years. Participants who received booster sessions at one and three years after initial training saw the strongest results. Five to six weeks of sessions, plus a few boosters. That was it.
The memory group? No significant difference. The reasoning group? Same. Only speed of processing moved the needle.
The results, published in February 2026 through Johns Hopkins and the University of Florida, confirmed what smaller analyses had suggested for years. Then a second study landed that made things more interesting.
The brain rebuilt its own wiring
A neuroimaging team at NYU took the same type of speed-of-processing training and tested it on people with traumatic brain injuries. These were patients whose white matter — the insulation wrapping the nerve fibers that connect different brain regions — had been physically damaged.
The training repaired it.
Not metaphorically. The researchers measured actual changes in white matter integrity using diffusion tensor imaging. Participants showed improved connectivity in tracts that had been compromised, and those structural changes lined up with gains in processing speed, attention, working memory, and everyday cognitive function. The brain restructured itself.
We wrote recently about how sleep loss strips the insulation off your neurons. This is the flip side. Your brain can lay down new insulation, too. But it needs the right conditions.
Here’s the catch
Training works. The evidence is strong enough now to say that without hedging. But training in a nutrient-depleted brain is like running a construction crew with no building materials. Your brain needs raw biochemical inputs to do the repair work that training stimulates.
Myelin — that white matter insulation the NYU study measured — requires specific fatty acids and B vitamins to form. Nerve growth factor, which supports the new connections training creates, depends on compounds like those found in lion’s mane mushroom. And the magnesium your brain uses to regulate NMDA receptors involved in learning and plasticity? Most people aren’t getting enough from food alone.
If you’re going to invest time in brain training, a few things are worth paying attention to.
Make sure your B vitamin levels are solid. B6, B12, and folate are direct inputs to myelin synthesis and neurotransmitter production. Our Brain Focus Nootropic Formula includes these alongside other compounds that support attention and cognitive processing.
Consider adding lion’s mane. Research shows it stimulates nerve growth factor production, which supports exactly the kind of neuronal remodeling that training triggers. We carry a standalone Lion’s Mane Mushroom supplement for this reason.
Don’t skip magnesium. The study we covered last month found magnesium supplementation led to brain function equivalent to 7 years younger. Magnesium Glycinate is one of the most bioavailable forms available.
Support blood flow to the brain. Cognitive training demands increased cerebral circulation. Ginkgo Biloba + Ginseng has decades of research supporting healthy blood flow.
The research behind all of this runs deep. We’ve compiled over 400 peer-reviewed studies on our Evidence page if you want to dig into the data yourself.
The bottom line
Twenty years of data. Two converging studies. One clear takeaway: your brain can rebuild, but only if you give it both the work and the raw materials to do it with.
Frequently asked questions
What is speed of processing training?
It’s a computer-based exercise where you identify and respond to visual information under increasing time pressure. The ACTIVE Study used a program that gradually shortened response windows and layered in more complexity across five to six weeks of sessions.
How much brain training do you need?
ACTIVE Study participants completed 10 sessions of 60-75 minutes each over 5-6 weeks, with optional booster sessions at 1 and 3 years. Even without boosters, the initial training showed lasting benefits.
Can brain training reverse cognitive decline that’s already started?
The ACTIVE Study focused on prevention in healthy older adults. However, the NYU white matter study demonstrated measurable improvement in people with existing brain injuries, suggesting the brain’s repair capacity extends even after damage has occurred.
Do commercial brain training apps actually work?
Most commercial apps haven’t been tested in long-term clinical trials with thousands of participants. The ACTIVE Study used a specific validated protocol. If you’re evaluating apps, check whether they’ve been tested in peer-reviewed research with real cognitive outcomes, not just improvement at the game itself.
What supplements support brain training?
B vitamins (B6, B12, folate) support myelin formation. Magnesium glycinate supports NMDA receptor function involved in learning. Lion’s mane mushroom stimulates nerve growth factor. Ginkgo biloba and ginseng support cerebral blood flow.
These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.
