Why You Keep Losing Your Words Mid-Sentence
You're mid-sentence - in a meeting, at dinner, telling a story someone actually wants to hear - and the word just goes. It was there a moment ago. You can feel the shape of it. But it's gone, and you're left doing that thing with your hand, saying "you know, the thing," while your brain scrambles to find what used to just be there.
Maybe you're also walking into rooms and standing there blankly, re-reading the same email paragraph three times or losing the thread of a conversation you started. If this has crept up on you in your forties, there's a specific reason for it. It's not early dementia (as I thought about myself!) and it's not stress (although stress makes it worse). And it's not just what happens when you get older.
What oestrogen is actually doing in your brain
Most people think of oestrogen as a reproductive hormone, full stop. But it's also heavily involved in how your brain works - in memory, in attention, in how you process and retrieve language, and in how efficiently your brain uses glucose for fuel.
The brain's language and memory networks are particularly sensitive to oestrogen. When oestrogen starts behaving the way it does in perimenopause - not declining in what would be a more helpful and steady way, but lurching up and down unpredictably, sometimes for years - these networks become less reliable. The word hasn't gone anywhere. It's just harder to get to. The pathways that used to work quietly in the background are having to work harder, with less support than they're used to.
Sleep makes everything worse too, which will surprise no one who's been staring at the ceiling at 3am. Memory consolidation, the process of properly filing what you've taken in during the day, happens during deep sleep. Night sweats, racing thoughts, early waking - they all interrupt this. That's why you can read something several times and it still won't stick. It's not that you're not concentrating, it's that the filing isn't happening.
Cortisol levels tend to be elevated when oestrogen is fluctuating - and cortisol directly impairs the prefrontal cortex, the part of the brain responsible for the kind of quick, fluid recall that used to just work.
What I look at when someone comes to me with brain fog
The first thing, almost always, is blood sugar. Not because it's a trending answer, but because the brain runs on glucose and if someone is eating in a way that creates spikes and crashes through the day e.g. skipping breakfast, eating carbohydrates without protein, going too long between meals - that instability shows up directly as fog and word-searching. Fixing this is structural: protein with every meal, fats and fibre alongside carbohydrates rather than instead of them, not letting too many hours pass between eating. It sounds simple and it makes a real difference.
From there, I'm looking at the Omega-3 picture. DHA (found in oily fish) is a building block of the neuronal membrane itself, and it also has a role in reducing the low-grade inflammation that sits underneath a lot of perimenopausal cognitive symptoms. Two to three portions of oily fish a week is meaningful. If fish isn't on the menu regularly, a good algae-based DHA supplement does the job.
The nutrient that surprises most people in this context is choline. It's the precursor to acetylcholine - the neurotransmitter most directly involved in memory and attention - and most women don't eat nearly enough of it. Eggs are by far the most accessible source. If you're avoiding eggs, we'd need to look at what else is in the picture.
Sleep ties it all together. Because none of the nutritional work above makes much difference on a fragmented night's sleep. The brain needs that time to consolidate, repair and reset.
I lost my words mid-sentence more times than I can count during my postgraduate studies. At the time I put it down to stress, to not sleeping well, to just how things were. It was only once I understood what oestrogen is doing in the brain that I recognised it for what it was: Perimenopause, happening quietly, well before I'd have used that word for myself. That realisation is what pointed me toward this work.
These symptoms are real, have a clear physiological basis, and respond to targeted nutritional support. They are not inevitable and they are not simply what your forties feel like now.
If this resonates, a Brain Fog Clarity Session is where to start - a single, focused consultation where we look at your specific symptoms, your current diet and your daily patterns, and I give you a written action plan built around your actual life.