Menopause Linked to Brain Changes Similar to Alzheimer’s

Recent research from the UK suggests menopause is associated with brain changes that resemble those seen in Alzheimer’s disease. The study indicates that the reduction of grey matter in key areas related to memory and emotion could explain why women have a higher risk of developing dementia compared to men.

The research involved nearly 125,000 women, with 11,000 participants undergoing MRI brain scans. It was published in the journal Psychological Medicine, highlighting that the use of hormone replacement therapy (HRT) did not seem to mitigate this grey matter loss.

Professor Barbara Sahakian, a senior author from Cambridge University, mentioned that the affected brain regions are typically influenced by Alzheimer’s. She noted, “Menopause might make these women more vulnerable in the long run. While this isn’t the entire explanation, it could account for the nearly doubled incidence of dementia in women versus men.”

The study identified changes in:

• a region crucial for learning and memory – the hippocampus
• a part essential for forming memories and spatial navigation – the entorhinal cortex
• a section that aids in attention and emotional regulation – the anterior cingulate cortex

Both white and grey matter are vital components of the brain and spinal cord. Grey matter consists of neuronal cell bodies and their dendrites, which are short extensions that allow communication between nearby neurons. On the other hand, white matter comprises long axons that transmit impulses across distant brain areas.

Reaching Out for Support

The NHS guidelines suggest that HRT could be helpful for menopausal symptoms like sleep disturbances and hot flashes. However, the researchers point out that our understanding of the effects of menopause and HRT on the brain, memory, and mood remains limited.

The study revealed that women on HRT were, interestingly, more likely to experience mental health issues, but many of these participants had existing mental health struggles before starting the treatment.

Co-researcher Dr. Christelle Langley underscored the need to acknowledge the diverse challenges associated with menopause. “It’s essential to be sensitive to not just the physical, but also the mental health aspects of women during this time. There should be no shame in sharing your experiences and seeking help.”

Michelle Dyson from the Alzheimer’s Society stated that women make up about two-thirds of those living with Alzheimer’s in the UK. She added, “While the factors behind this susceptibility are still not fully clear, hormones are believed to play a role.” This extensive study contributes to our understanding of menopause’s impact on the brain, including noticeable physical changes like loss of brain volume. However, without long-term follow-ups to determine potential dementia development, it’s uncertain whether menopause-related brain changes directly elevate dementia risk.

Dyson also advised that regular exercise, avoiding smoking, and moderating alcohol consumption can help mitigate dementia risk.