Brain fog and memory

What it looks like

The NHS lists problems with memory and concentration, commonly described as brain fog, among the symptoms of perimenopause and menopause. In practice it shows up as losing your thread mid-sentence, forgetting names or why you walked into a room, or finding it harder to focus and hold several things in mind at once. It can be unsettling, especially if you worry it means something more serious. Research into the menopause transition, such as Maki and Henderson (2016), suggests these complaints are common, and that for many women the changes are mild and tend to settle rather than progress.

What the evidence says helps

Brain fog is linked to fluctuating oestrogen affecting areas of the brain involved in memory and attention, but it is rarely caused by that alone. It is closely tied to the other symptoms of this stage, particularly poor sleep, hot flushes, low mood and anxiety, and stress. That is the useful part: improving sleep and mood often improves concentration as a knock-on effect.

The general advice is to support brain health the way you support overall health: regular physical activity, protecting sleep, managing stress, staying mentally and socially active, and a balanced diet. NICE guidance (NG23) sets out treatments for the symptoms that often feed brain fog, such as hot flushes, night sweats and low mood, which is worth discussing with a GP if symptoms are affecting your life.

Where supplements fit

There is no supplement authorised to claim it treats menopausal brain fog or improves memory, and products marketed for focus and memory should be read with that in mind. A balanced diet covers the nutrients the brain needs for most people. If your diet is light in omega-3, it carries a general authorised role for normal brain and heart function, but that is general nutrition rather than a treatment for brain fog. Since brain fog so often tracks poor sleep and low mood, addressing those tends to clear the head more reliably than a memory or focus product. If you are considering one, raise it with your GP or pharmacist first.

When to see your GP

See your GP if memory or concentration problems are affecting your work or daily life, if they are getting worse rather than steadying, or if you are worried about them. A GP can rule out other causes that produce similar symptoms, such as thyroid problems, low iron, depression or sleep disorders, and discuss menopause treatment options. Ruling those out is reassuring in itself.