18/04/2026
What does brain fog feel like in perimenopause?
Many women describe brain fog as forgetfulness.
But in reality, it often feels much more unsettling than that.
For me, it felt like my brain was full of cotton wool.
My thinking was slower.
I struggled to concentrate.
Information just didn’t stick.
I would read something and realise I hadn’t taken any of it in.
I started forgetting things at work which increased my anxiety.
There was also a sense of disconnection.
Not confusion, but a lack of clarity.
Like I wasn’t as mentally present as I used to be.
At times, it was frightening.
I even worried about early dementia.
Common brain fog symptoms in perimenopause include:
• Memory lapses
• Poor concentration
• Word-finding difficulties
• Mental fatigue
• Feeling overwhelmed by simple tasks
These symptoms often fluctuate and may worsen with stress, poor sleep or hormonal changes.
If you’re experiencing this, you’re not alone and there are ways to support your brain and nervous system.
You can read more here:
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The Real Science Behind Perimenopause and Memory