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Health 10 Dec 2025

Menopausal Brain Fog Versus Dementia

How can you tell the difference between the two?

No matter how old you are, we all forget things from time to time. But as we age, these moments of forgetfulness can happen more frequently.

For many women in their 40s and 50s, these lapses in memory – or ‘brain fog’ moments – may be more regular with the onset of menopause.

It can be worrying to notice changes in your cognitive function – especially if other people notice it too.

So how do you know if changes in focus, memory, or mental sharpness are caused by the transition to menopause, or something more serious like dementia?

It can be confusing as some symptoms of the two do overlap. However, they are caused by different things and require different approaches to address them.

Knowing the differences between menopause brain fog and dementia is key to understanding the conditions and knowing when to seek support.

Menopausal brain fog

Brain fog is a term used to describe a number of symptoms related to your cognitive function. Commonly experienced by women in their 40s and 50s as they enter menopause or perimenopause, brain fog may cause mental cloudiness, forgetfulness, difficulty concentrating or feeling mentally slower than usual.

Hormones such as estrogen fluctuate during perimenopause and menopause, which can bring about these cognitive symptoms, as they play an important role in brain function. Estrogen supports key neurotransmitters and brain connectivity, especially in areas responsible for memory and focus.

Other factors that accompany this transition may also contribute to brain fog, such as disturbed sleep and stress.

The good news is that brain fog linked to menopause is usually temporary, with many women finding their cognitive function improves over time.

Talking to a specialist about any cognitive changes is important as they can help you identify your symptoms and how to manage them.

Dementia

Dementia refers to a number of cognitive changes that can cause memory loss, impaired mental ability with everyday tasks, and problems with communication. Dementia symptoms can vary from mild to severe, but they worsen over time.

Dementia is caused by damage to the brain cells, making it harder for them to communicate with one another, meaning the condition is progressive in nature.

Symptoms vary, for example, someone with Alzheimer’s, a type of dementia, usually begins with memory loss but can progress to other cognitive impairments.

Seeing a neurological specialist is crucial for anyone experiencing dementia symptoms. They will perform a thorough examination to rule out other conditions which may be causing the symptoms.

Women and dementia

As we age, particularly around midlife transitions such as perimenopause, menopause, and early menopause, a complex interplay of hormones, genetics, immune responses, vascular health, and social roles, can affect our cognitive health.

Research into women’s brain health is evolving and we are learning more and more about the risk of conditions such as Alzheimer’s and cognitive decline.

Women are at a higher risk of dementia and there are a number of factors thought to be responsible, including estrogen decline, prevalence of autoimmune diseases, certain genetic factors, stress and more.

Don’t neglect your brain’s health

Brain fog may be your brain’s early warning sign for change. Knowing the difference between brain fog and dementia is an important first step in looking after your brain’s health.

Women’s brains respond differently to ageing and disease, so seeking support from a specialist trained in women’s brain health is essential. If you are over 40 and concerned about any cognitive changes, become an advocate for your brain and talk to a specialist today.

 

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