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Brain Training as a Key to Cognitive Longevity

A recent Nautilus article, "Will 90 Become The New 60?", presents compelling evidence for the phenomeon of compression of morbidity.

September 24, 2025
Nicholas White

Picture this: you're 90 years old, but instead of spending your final decade battling illness and disability, you're living independently, thinking clearly, and enjoying life much like you did at 60. This isn't science fiction; it's the promise of what researchers call compression of morbidity, and it's already happening.

How it works: instead of gradually declining over many years, people are staying healthier longer and then experiencing a much shorter period of illness at the very end of life. Think of it like a marathon runner who maintains their pace for nearly the entire race, then only slows down in the final stretch, rather than gradually getting slower mile after mile.

The numbers are remarkable. By 2010, Americans could expect to live 80% of their lives without major disability, including well over half of their years after age 65^1^. Even more encouraging, recent studies show that dementia incidence has dropped by 20% over the past two decades.1 This trend toward what we might call cognitive morbidity compression, or where our minds stay sharp much longer, creates an unprecedented opportunity for brain training technologies to help us maintain our mental edge throughout our extended lifespans.2

Recent studies show that dementia incidence has dropped by 20% over the past two decades.

Building Your Brain's "Backup Generator"

The science behind cognitive longevity lies in something called cognitive reserve theory: essentially, building a backup generator for your brain. When you challenge your mind throughout life through education, complex work, and engaging hobbies, you're creating multiple pathways for your brain to accomplish tasks. So even if aging or disease damages some neural circuits, your brain has alternative routes to get the job done.

Research shows this isn't just theoretical. People with higher cognitive reserve can actually delay dementia symptoms by 1-2 years, even when brain scans show the same underlying disease as someone who develops symptoms earlier.3 It's like having a well-maintained car that keeps running smoothly even when some parts start to wear out, compared to a neglected vehicle that breaks down at the first sign of trouble.

What's particularly intriguing is that we now understand that much of what we considered "normal" aging is actually accelerated by early-life challenges like disease and malnutrition.4 This suggests that proactive interventions, especially cognitive training, could prevent or significantly delay the mental decline we once thought was inevitable. Studies demonstrate that cognitive reserve built through lifelong learning provides protective effects against dementia, with the biggest impact coming from interventions early in life and again later in life.5

Modern brain training embraces what scientists call dynamic equilibrium. Rather than trying to prevent all age-related changes (which is impossible), the goal is to manage and slow these changes while maintaining function.6 In this analogy, it's like maintaining a classic car: you can't stop it from aging, but with proper care and regular tune-ups, you can keep it running beautifully for decades longer than expected.

The aforementioned Nautilus article explains this succintly:

What we see as the “natural lifespan” is simply a balance between the wear of daily life and the limited ability of repair mechanisms to undo it fully. Shifting the balance, either by increasing the rate or efficiency of repair, or by reducing the rate of damage, must surely stretch out the whole process. Actually, it should do even better than that: The end stage, where most of our suffering is found, ought to be the least susceptible to extension, since it requires maintaining the function of an organism that is failing on multiple levels.

This philosophy aligns perfectly with Dr. Kawashima's assertion that "you can train your brain at any age." The continuous neural adaptation made possible by neuroplasticity, aka, our brain's ability to rewire itself, is exactly the kind of "repair mechanism" that can tip the balance toward healthier aging. The next generation of brain training technology is at the forefront of this development.

Multimodal neurofeedback systems using fNIRS (functional near-infrared spectroscopy) technology represent a breakthrough in supporting cognitive morbidity compression. Recent research shows that fNIRS-guided cognitive training can significantly improve working memory in elderly patients with mild cognitive impairment.7 What's particularly impressive is that brain scans show decreased activation after training. This occurs not because the brain is working less, but because it's working more efficiently, like a well-tuned engine using less fuel to produce the same power.

These advanced systems can measure blood flow changes in your brain through fNIRS technology, providing real-time feedback on neuroplasticity mechanisms: essentially showing you how your brain is adapting and improving as you train.8 Studies demonstrate that structured cognitive training programs can delay normal cognitive aging by 1-2 years compared to casual brain games, with participants showing lasting improvements in processing speed, executive function, and overall cognitive ability.9

According to Dr Kawashima, the brain's neuroplasticity is accessible at any age.

The Mind-Body Connection

Here's where it gets even more interesting: the integration of physical exercise with cognitive training proves particularly effective. When you exercise, your body produces more brain-derived neurotrophic factor (BDNF). Think of BNDF as fertilizer for your brain cells, which also reduces harmful inflammatory factors. Combine this with cognitive training that strengthens neural circuits, and you've got a powerful one-two punch against brain aging.10

One way of addressing the 14 modifiable lifestyle factors, which are largely related to dementia risk, is through social connection.

The Future Is Now

The implications for brain training systems like Thinkie are truly transformative. Research shows that you need at least 52 hours of combined cognitive and/or physical exercise to see meaningful improvements in older adults11, which tells us that sustained, measurable interventions are crucial for creating lasting neuroplastic changes. Advanced brain training systems such as Thinkie furnish the objective monitoring and personalized feedback necessary to optimize these interventions. Being proactive in this sense can potentially extend our period of mental vitality by decades rather than just years.12

Imagine those spry 90-year-olds of the future: they might rely on various technological aids such as cochlear implants for hearing, stem-cell treatments for physical repair, and brain training sensors for cognitive maintenance, as natural extensions of our technological enhancement of human longevity.13 By targeting the 14 modifiable lifestyle factors that research shows can prevent up to 45% of dementia cases, including cognitive training and social engagement, sophisticated neurofeedback systems could serve as the primary platform for preserving our cognitive health throughout our extended lifespans.14

The compression of morbidity isn't just a theory anymore; it's a reality we're already living. With the right tools and approaches, we can make it even more dramatic. The question isn't whether we can stay cognitively sharp until 90; it's whether we'll take advantage of the new technologies that can help us get there.

Citations

1 Will 90 Become The New 60? - Nautilus

2 Neuroplasticity and Healthy Aging: What You Need to Know - Pacific Neuroscience Institute

3 Building cognitive reserve could protect against memory and thinking decline - Alzheimer's Research UK

4 Lifestyle Modulators of Neuroplasticity: How Physical Activity, Mental Engagement, and Diet Promote Cognitive Health during Aging (PMC)

5 Cognitive reserve over the life course and risk of dementia (PMC)

6 Cognitive Reserve and the Prevention of Dementia (PMC)

7 Cognitive training based on functional near-infrared spectroscopy neurofeedback (PMC)

8 The Advantages of Combining fNIRS and EEG for Brain Monitoring - Artinis

9 You can slow cognitive decline as you age, large study finds - CNN

10 Risk Factors, Lifestyle Behaviors, and Vascular Brain Health - American Heart Association

11 Exercise for cognitive brain health in aging: A systematic review (PMC)

12 Neural ageing and synaptic plasticity: prioritizing brain health in healthy longevity - Frontiers

13 The power of neuroplasticity: How your brain adapts and grows as you age - Mayo Clinic

14 Targeting 14 lifestyle factors may prevent up to 45% of dementia cases - Alzheimer's Drug Discovery Foundation

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Brain Training as a Key to Cognitive Longevity

A recent Nautilus article, "Will 90 Become The New 60?", presents compelling evidence for the phenomeon of compression of morbidity.

September 24, 2025
Nicholas White
Science Your Brain.