Dementia Prevention for Women: Why Midlife Matters

Dementia Prevention for Women: Why Midlife Matters

There are some diseases we don’t like to think about until they arrive.

Dementia is one of them.

We worry about breast cancer. We check our cholesterol. We talk about heart disease, osteoporosis and menopause.

But how often, in our 40s and 50s, do we ask:

“What am I doing today to protect the brain I want to have at 70, 80 or 90?”

Perhaps we should.

Because dementia is no longer a distant or uncommon problem. It is now the leading cause of death in Australia, and women make up almost two-thirds of Australians living with dementia.

This Dementia Action Week, I want to start a different conversation about dementia prevention for women.

Because dementia is not simply something that suddenly happens when we become old.

Some of the processes that influence our future brain health may begin decades earlier.

And that means our 40s and 50s matter.

Dementia is not an inevitable part of ageing

Age is the strongest risk factor for dementia.

But dementia itself is not a normal or inevitable part of ageing.

Perhaps one of the most hopeful developments in dementia research is the growing understanding that a meaningful proportion of dementia risk is potentially modifiable.

The World Health Organization reported in 2026 that up to 45% of dementia risk could potentially be prevented or delayed by addressing modifiable risk factors.

These include physical inactivity, smoking, harmful alcohol use, social isolation and cardiometabolic conditions such as hypertension and diabetes.

Think about that for a moment.

We cannot control everything.

We cannot choose our age.

We cannot choose our genes.

But there are important parts of the story that we may be able to influence.

And many of the things that protect our heart and metabolic health also appear to protect our brain.

Dementia prevention for women starts earlier than we think

For women, this conversation is particularly important.

Women account for around two-thirds of Australians living with dementia, and dementia is the leading cause of death among Australian women.

Some of this difference is because women tend to live longer, and age remains the strongest risk factor for dementia.

But that doesn’t mean we should simply accept dementia as our destiny.

Our 40s and 50s may represent an important window in which to start protecting our future brain health.

Interestingly, many of the things we already talk about at Whole Food Revolution for improving metabolic health in midlife are also relevant to dementia prevention.

Because the body isn’t divided into separate departments.

Your brain, heart, blood vessels, muscles and metabolism are all connected.

What does diabetes have to do with dementia?

You may have heard Alzheimer’s disease described as “Type 3 diabetes.”

It’s a fascinating phrase, but it needs some explanation.

Alzheimer’s disease is not literally another form of diabetes, and “Type 3 diabetes” is not an official medical diagnosis.

The term developed because researchers discovered abnormalities involving insulin signalling, glucose metabolism and energy regulation within the Alzheimer’s brain.

There is growing scientific interest in the relationship between insulin resistance, metabolic dysfunction and neurodegeneration.

But we already know something much more practical.

Diabetes is a recognised modifiable risk factor for dementia.

That should change the way we think about metabolic health.

Insulin resistance isn’t only about whether you eventually develop diabetes.

Blood pressure isn’t only about your heart.

Exercise isn’t only about your weight.

And food isn’t simply about the number on your bathroom scales.

Your metabolic health is also part of your brain health.

Your brain needs metabolic health too

The brain is an extraordinarily energy-hungry organ.

It depends on a healthy blood supply, effective energy metabolism and healthy signalling between billions of nerve cells.

Over many years, diabetes, hypertension, smoking, physical inactivity and other cardiovascular and metabolic problems can contribute to conditions associated with cognitive decline.

This is why dementia prevention increasingly takes a life-course approach.

We shouldn’t wait until someone is 75 and experiencing significant memory problems before we start thinking about brain health.

We may have missed decades of opportunity.

Dementia prevention for women isn’t found in a pill

Modern medicine continues to search for effective treatments for dementia, and new therapies are emerging.

That work is enormously important.

But dementia prevention for women cannot depend on waiting for a future medication.

There is no single dementia-prevention pill.

There is no miraculous supplement.

And there is no single superfood that protects the brain.

Instead, prevention appears to involve many ordinary things practised consistently over many years.

Move your body.

Build muscle.

Improve cardiovascular fitness.

Don’t smoke.

Keep alcohol within low-risk levels.

Eat predominantly nutrient-dense, minimally processed foods.

Address diabetes, high blood pressure and abnormal cholesterol rather than ignoring them.

Protect your hearing and vision.

Continue learning.

Stay socially connected.

And look after your metabolic health.

None of these is particularly glamorous.

But collectively, they matter.

Muscle is brain medicine too

I particularly want women in midlife to understand the importance of muscle.

Resistance training isn’t simply about looking toned.

And it isn’t only about preventing osteoporosis.

Skeletal muscle is metabolically active tissue and one of our most important sites for glucose disposal.

Regular resistance exercise can improve strength, insulin sensitivity, physical function and metabolic health.

Research has also found associations between exercise, cognitive function and brain health.

Aerobic fitness matters too.

And higher-intensity exercise is an interesting emerging area of research, with studies investigating its effects on cerebral blood flow, neuroplasticity, learning and memory.

We should be careful not to claim that lifting weights or doing HIIT guarantees that you won’t develop dementia.

It doesn’t.

But regular physical activity is one of the important pieces in the dementia-risk-reduction puzzle.

So don’t exercise simply because someone told you that you need to burn calories.

Exercise because your muscles, bones, heart—and brain—need you to.

Sleep is brain health

Sleep is another area that women often sacrifice during midlife.

Work.

Children.

Ageing parents.

Hormonal changes.

Stress.

Responsibilities.

We convince ourselves that we can somehow catch up later.

But sleep is not wasted time.

It is essential biological maintenance.

And if sleep is persistently poor—particularly if there is snoring, significant daytime sleepiness or concern about sleep apnoea—it deserves proper assessment rather than simply being accepted as part of getting older.

Dementia prevention for women means taking sleep seriously too.

What about chronic stress?

We cannot eliminate stress from our lives.

Nor should “reduce your stress” become another impossible job on a woman’s already overflowing to-do list.

Instead, we need to become better at regulating our response to stress.

Chronic stress can influence sleep, food choices, blood pressure, physical activity, relationships and metabolic health.

And when we become overwhelmed, the very behaviours that protect our health are often the first things to disappear.

This is why emotional regulation and behaviour change belong in the conversation about dementia prevention.

Knowing what to do isn’t enough.

We need to know how to make it part of our lives.

And this brings me to the three foundations we use at Whole Food Revolution.

Proof. Practice. Programming.

At Whole Food Revolution, we believe sustainable health begins with three foundations.

Proof means understanding the science.

Knowing why blood glucose matters.

Why blood pressure matters.

Why muscle matters.

Why movement matters.

Why sleep matters.

And why protecting your metabolic health today may also help protect your brain tomorrow.

Practice is turning that knowledge into everyday life.

It’s the meal you actually eat.

The weights you actually lift.

The walk you actually take.

The bedtime you protect.

The medical checks you stop postponing.

And the relationships you continue nurturing.

Programming is the piece that conventional healthcare often doesn’t have enough time to address.

It is understanding the beliefs, habits, emotional responses and automatic behaviours that determine whether we actually do what we know is good for us.

Because information without behaviour change rarely transforms health.

Proof is knowing it.

Practice is living it.

Programming is becoming it.

Dementia prevention for women is also about reclaiming your power

Perhaps this is where dementia prevention becomes something much bigger than avoiding a disease.

In midlife, we have an opportunity to reclaim what we call our five powers.

Perspective is the wisdom to understand that what we do today shapes the decades ahead.

Power is the physical strength and metabolic resilience we build through muscle and movement.

Peace is our ability to regulate stress and create space for recovery and sleep.

Purpose is having something that continues to challenge us, engage us and give meaning to our lives.

People are our tribe, relationships and connection with others.

That last one matters enormously.

Social connection and cognitive engagement are also part of the modern dementia-risk conversation.

Perhaps protecting our brains isn’t simply about living longer.

It’s about continuing to have a life we want to remember.

Don’t wait until you forget

This is the message I would love women in their 40s and 50s to hear during Dementia Action Week.

Don’t wait for memory problems before you start thinking about your brain.

Don’t wait for diabetes before addressing your metabolic health.

Don’t wait for frailty before building muscle.

Don’t wait until exhaustion becomes normal before prioritising sleep.

And don’t wait until retirement to discover that relationships, purpose, learning and connection are also part of health.

None of this guarantees that we will prevent dementia.

There are risk factors we cannot change, and people who live exceptionally healthy lives can still develop dementia.

Dementia prevention isn’t about guarantees.

It’s about reducing the risks we can influence.

And that is why dementia prevention for women should begin long before old age.

At Whole Food Revolution, that is exactly what we are trying to do: take the science—the Proof—and turn it into sustainable Practice and Programming, helping women reclaim their Perspective, Power, Peace, Purpose and People.

Not because we are frightened of growing older.

Because we want to grow older well.

Read:

The Top Health Concern for People over 50