By Andrew Klein

Dedicated to my family — who taught me that a whole-of-life connection is not merely survival, but the very essence of thriving.

I. Introduction: A Disease That Should Not Be

Dementia is now the leading cause of death in Australia. In 2026, an estimated 446,500 Australians are living with dementia — a figure projected to more than double to over one million by 2065. Globally, the number of people living with dementia has nearly tripled from 1990 to 2021, with prevalence projected to reach 152 million by 2050.

This is not a natural consequence of aging. It is a failure — a failure of prevention, a failure of understanding, and a failure of a healthcare system that profits from managing disease rather than cultivating health.

The question we must ask is not how do we treat dementia? but why have we allowed it to become so prevalent? And more importantly: what are we not doing that we should be?

II. The Scale of the Crisis

A. Australia’s Dementia Epidemic

Year Estimated             Australians Living with Dementia

2025                                     433,300

2026                                     446,500

2054                                     812,500

2065                                     1,000,000

Dementia is now the second leading cause of disease burden in Australia. An estimated 29,000 Australians aged 18–65 are living with young-onset dementia, a figure projected to increase by over 40% to 41,000 by 2054. Approximately 1.7 million Australians are involved in the care of someone living with dementia.

B. The Global Picture

Globally, the incidence of Alzheimer’s disease and other dementias increased from 507.96 per 100,000 in 1990 to 569.39 per 100,000 in 2019. The total number of affected individuals reached 43.8 million in 2016, marking a substantial 117% increase compared to the 20.3 million recorded in 1990.

The global economic burden of dementia is estimated at approximately $1 trillion annually, a figure expected to double by 2030. Canada’s dementia care costs alone are projected to reach $153 billion by 2038.

This is not normal. This is not inevitable. This is a systemic failure.

III. The Evidence: Meditation as Prevention

A. Systematic Reviews and Meta-Analyses

A 2025 systematic review and meta-analysis of 25 randomized controlled trials involving 2,095 participants found that meditation significantly improved:

· Global cognitive performance (MD 2.22, 95% CI: 0.83–3.62, p = 0.002)

· Sleep quality (MD –1.40, 95% CI: –2.52 to –0.27, p = 0.015)

· Health status (MD 3.50, 95% CI: 0.45–6.56, p = 0.020)

The authors concluded that meditation is an “effective adjunct therapy for improving global cognitive performance, sleep quality, and health status” in older adults with subjective cognitive decline, mild cognitive impairment, and Alzheimer’s disease.

B. Neurobiological Mechanisms

A 2026 systematic review of mind-body interventions found that meditation and yoga produced:

· Preservation of hippocampal volume

· Improved functional connectivity

· Increased brain-derived neurotrophic factor (BDNF) levels

· Reduced neuroinflammation markers

The review concluded that mind-body interventions show “promising cognitive and neurobiological benefits in populations at risk of AD” and “may serve as feasible, cost-effective complementary approaches”.

C. Effects on Brain Aging

A 2025 study examining the impact of long-term meditation on brain aging found that older expert meditators with over 20 years of practice exhibited significantly younger brain age compared to non-meditators, with the effect linked to meditation hours, mental imagery, and prosocialness.

An 18-month meditation training study found that meditation training led to:

· Increased time spent in a “strongly connected” brain state (associated with protective factors for dementia)

· Decreased time spent in a “weakly connected” brain state (associated with risk factors)

· Significantly more transitions between brain states (p = 0.008, d = 0.52)

The researchers concluded that meditation has a “beneficial effect … through a reduction in dFNC metrics associated with AD risk factors and an increase in dFNC metrics associated with protective factors”.

D. Effects on Alzheimer’s Biomarkers

A 2025 randomized clinical trial found that mindfulness meditation with slow breathing reduced plasma amyloid-beta (Aβ) levels, while mindfulness alone showed increases. This suggests that the specific practice of meditation — not just the intention — has measurable biological effects on Alzheimer’s-related proteins.

E. A Note on Duration

A 2025 study found that long-term meditation (over 20 years) is associated with younger brain age, but 18-month training had no significant effect on brain age. This emphasises the need for sustained practice — not quick fixes, but whole-of-life engagement.

This is precisely what the profit-driven system cannot deliver. It is not profitable to teach people to meditate for 20 years. It is profitable to sell them drugs for 20 years.

IV. What Has Been Missed

A. The Missing Piece: Rest as Active Healing

The research has focused on meditation as a technique. But what if the active ingredient is simpler? What if it is rest?

The body heals when it is at rest. The brain consolidates memory during sleep. The nervous system down-regulates during stillness. The inflammatory cascade subsides when stress hormones are low.

The “space between thoughts” is not a mystical concept. It is a neurological state — a state in which the default mode network quiets, the sympathetic nervous system withdraws, and the parasympathetic system takes over.

This is not fringe. This is biology.

B. What the Research Has Overlooked

1. The role of the environment: Sterile, noisy hospital settings are the opposite of healing environments. The research has not adequately examined the impact of where healing occurs.

2. The whole-of-life approach: Prevention requires a lifetime of practice, not a course of treatment. The research has focused on short-term interventions.

3. The profit motive: The research has not adequately addressed why prevention is so underfunded. The answer is obvious: there is no money in prevention.

C. Why This Has Been Missed

The for-profit healthcare system is structurally incapable of prioritising prevention. It profits from managing chronic conditions, not from curing them.

· Drug manufacturers have no interest in a free, non-patentable intervention.

· Private hospitals profit from admissions, not from keeping people well.

· Insurance companies profit from premiums, not from reducing claims.

The system is designed to treat sickness, not to cultivate health.

V. The Economic Argument

A. The Cost of Inaction

Cost Category                                                                          Annual Estimate

Global dementia care costs                                                 $1 trillion

Canada’s projected dementia costs (2038)             $153 billion

Australian dementia care (projected)                          Substantial and increasing

A 2025 cost estimation analysis found that preventive measures could significantly reduce long-term treatment costs, making them a crucial investment to alleviate future financial burdens.

B. The Cost-Effectiveness of Prevention

A 2025 economic evaluation found that a primary prevention program for Alzheimer’s disease would be cost-effective at a per-dose price of $1,173 in APOE4 carriers and $307 in non-carriers.

Mind-body interventions have been described as “feasible, cost-effective complementary approaches“. A 2025 scoping review highlighted the potential of mindfulness meditation as a “low-cost, scalable intervention”.

C. The Opportunity Cost

The question is not whether we can afford prevention. The question is whether we can afford not to prevent.

With 43% of dementia burden attributable to six modifiable risk factors in Australia — tobacco use, overweight and obesity, physical inactivity, high blood pressure, high blood glucose, and impaired kidney function — the potential for prevention is enormous.

The system is choosing to spend billions on treatment rather than millions on prevention. This is not a financial decision. It is a moral decision.

VI. The Case for a Whole-of-Life Approach

A. What Prevention Requires

· Early intervention: Starting in childhood, not old age

· Lifelong learning: Cognitive reserve through continuous engagement

· Physical activity: Regular exercise that promotes neuroplasticity

· Stress reduction: Meditation, mindfulness, and rest

· Social connection: Community and belonging

· Healthy environment: Clean air, quiet spaces, and nature

B. What the System Provides

· Reactive care: Treatment after the disease has developed

· Pharmaceutical solutions: Drugs that manage symptoms but do not cure

· Noisy environments: Hospitals that are the opposite of healing

· Profit-driven priorities: Interventions that generate revenue, not health

C. The Way Forward

1. Recognise rest as active healing: The body heals when it rests. This is not alternative medicine — it is biology.

2. Invest in prevention: Shift resources from treatment to prevention.

3. Create healing environments: Quiet, safe, nature-connected spaces.

4. Remove the profit motive: Healthcare should be a right, not a commodity.

5. Teach meditation in schools: Start early, practice lifelong.

VII. Conclusion: The Silence That Heals

The evidence is clear. Meditation works. It improves cognition, reduces biomarkers of Alzheimer’s, and promotes healthy brain aging. It is cost-effective, scalable, and accessible.

And yet, it is marginalised. Ignored. Dismissed as “fringe.”

Why? Because there is no profit in it. Because a patient who heals is a patient who stops paying. Because a system built on profit cannot afford to prioritise prevention.

This is not a failure of science. It is a failure of will.

The silence between thoughts is not empty. It is the space where healing begins. It is the space where the brain rests, the nervous system calms, and the body repairs.

We have been taught to fear silence. We have been taught to fill every moment with noise, with distraction, with consumption. But the silence is where we find ourselves. It is where we find each other. It is where we find the healing that the system denies us.

The system is broken. But we are not.

Andrew Klein

References

1. Australian Institute of Health and Welfare. (2025). Dementia prevalence data 2024-2054. Dementia Australia. 

2. Dementia Australia. (2026). Dementia facts and figures. https://www.dementia.org.au/about-dementia/dementia-facts-and-figures 

3. Dementia Australia. (2026). Dementia prevalence estimates in Australian electoral divisions: 2025-2054. 

4. Shi, J., Tian, H., Wei, J., et al. (2025). Meditation for subjective cognitive decline, mild cognitive impairment and Alzheimer’s disease: a systematic review and meta-analysis of randomized controlled trials. Frontiers in Public Health, 13, 1524898. 

5. Mind–Body Interventions as Modulators of Neural Connectivity and Cognition in Individuals at Risk for Alzheimer’s Disease: A Systematic Review. (2026). SAGE Open. 

6. Haudry, S., Lambert, N., Gaser, C., et al. (2025). Impact of meditation on brain age derived from multimodal neuroimaging in experts and older adults from a randomized trial. Scientific Reports, 15, 37710. 

7. Effects of an 18-month meditation training on dynamic functional connectivity states in older adults: Secondary analyses from the Age-Well randomized controlled trial. (2025). European PMC. 

8. Vasileiou, D., et al. (2025). Positive Psychology Interventions in Early-Stage Cognitive Decline Related to Dementia: A Systematic Review of Cognitive and Brain Functioning Outcomes of Mindfulness Interventions. Brain Sciences, 15(6), 580. 

9. Cost Estimation Analysis of Dementia: A Scope Review. (2025). Cureus, 17(5), e84547. 

10. New data showing dementia is Australia’s leading cause of death means we need to make brain health a national priority. (2026). ScienceDirect. 

11. A preliminary economic evaluation of a potential program for the primary prevention of Alzheimer’s disease. (2025). ScienceDirect. 

12. Slow breathing during meditation reduces Alzheimer’s-related proteins in the blood. (2026). PsyPost. 

13. Neuroinflammation, Brain Networks & Mind-Body Exercise Impact. (2026). Brain, Behavior, and Immunity – Health. 

14. Global burden of Alzheimer’s disease and other dementias: 1990-2021. (2025). BMC Medicine. 

15. Alzheimer’s Disease International. (2019). World Alzheimer Report. 

The author would like to thank his family for their contributions to this work — and for reminding him that the silence between thoughts is where the truth lives.