WOMEN'S HEALTH · NUTRITION · BRAIN SCIENCE

Wait — creatine monohydrate is actually good for your brain?

Yep. And if you're going through perimenopause, it might be one of the most interesting supplements you haven't tried yet.

For most people, creatine monohydrate conjures up images of guys at the gym scooping powder into shakers. Fair enough, that's been its reputation for decades. But researchers have been quietly building a very different case for this supplement, and women in midlife are increasingly at the centre of it.

So let's break it all down, what creatine monohydrate actually does, why your brain loves it, and what the latest science says about it specifically for perimenopause and menopause.

First, what even is creatine monohydrate?

Creatine is something your body already makes, from three amino acids: arginine, glycine, and methionine. Your liver, kidneys and pancreas handle production, and you also get small amounts from red meat and seafood. Creatine monohydrate is simply the most studied and widely available supplemental form of it, and it's been researched more extensively than almost any other supplement on the market.

Here's the simple version: your cells run on a molecule called ATP. Think of ATP as a battery charge. When you run out mid-task, creatine steps in to top it back up, and fast. It's essentially an emergency energy reserve for your cells, including your neurons.

Now here's the wild part. Your brain uses about 20% of your body's total energy, despite being only 2% of your body weight. It is a genuinely power-hungry organ. And when that energy supply gets disrupted, by poor sleep, stress, aging, or hormonal changes, you feel it. In your focus. Your memory. Your mood.

So what does creatine monohydrate actually do for the brain?

Researchers have been studying this for a while now, and the results are genuinely promising. A 2024 review that looked at sixteen randomised controlled trials, all using creatine monohydrate, found that supplementation improved memory, attention, and how quickly people processed information. The effects were strongest in women, and in people aged 18–60.

One study found that creatine monohydrate improved cognitive performance during sleep deprivation, basically by keeping brain energy levels higher when the body is under stress. If you're running on broken sleep and hot-flash-interrupted nights, that finding is pretty relevant.

There's also early research in Alzheimer's disease. A pilot study at the University of Kansas gave participants with Alzheimer's creatine monohydrate daily for eight weeks. Brain creatine levels rose by 11%, and participants showed moderate improvements in working memory and executive function. It's early days, but the researchers were clear: this is a solid reason to do bigger trials.

Why menopause and creatine monohydrate are such an interesting combo

Here's the thing about estrogen that doesn't get talked about enough: it's not just a reproductive hormone. It actively supports your brain, protecting neurons, fuelling the hippocampus (your memory and learning hub), and helping maintain the whole energy metabolism system that keeps your thinking sharp.

When estrogen starts to fluctuate and fall in perimenopause, your brain notices. Brain fog, word-finding struggles, difficulty concentrating, mood swings, anxiety, these aren't just "getting older." They're real neurological shifts driven by a hormonal transition that your brain is navigating in real time.

Add to that the sleep disruption (hot flashes at 2am, anyone?), which further depletes your brain's energy, and you've got a perfect storm of cognitive challenge. And this is exactly where creatine monohydrate's specific strengths line up.

Women also tend to have lower baseline creatine levels than men, in both muscle and brain. That gap matters more during menopause when your body's already dealing with shifts in energy metabolism. Supplementing with creatine monohydrate may help close it.

What the latest research says for women in menopause

A 2025 trial specifically studying creatine supplementation in perimenopausal and menopausal women with brain fog found that eight weeks of supplementation produced measurable increases in frontal cortex creatine levels, significant improvements in reaction time, and promising signals for mood stabilisation, with no adverse effects reported.

Researchers called it a "safe, effective, and practical" strategy for supporting women through the menopause transition. That's not just good news, it's a meaningful shift in how we think about this supplement for women specifically.

Okay, how do I actually take creatine monohydrate?

Creatine monohydrate is the gold standard, the form used in the vast majority of research, affordable, widely available, and backed by decades of safety data. It's the most studied sports supplement in the world, and its safety profile is genuinely excellent.

A standard daily dose is 3–5 grams. You don't need to do a "loading phase" (taking higher amounts for the first week), though you can, either way, you'll get to the same place within a few weeks. Just mix it into water, a smoothie, coffee, or whatever you like. It's virtually tasteless.

The main thing? Take it consistently, even on days you're not exercising. That's actually what matters most, steady, daily use builds up your brain and muscle creatine stores over time. If you eat a mostly plant-based diet, you may have lower baseline levels and could notice the effects even more.

So should you try it?

Creatine monohydrate isn't going to magically make menopause a breeze. But it's one of the most researched, safest, and now increasingly well-evidenced supplements out there, and the emerging picture for women's brain health and the menopause transition is genuinely exciting.

If you're dealing with brain fog, broken sleep, or that frustrating sense that your mind isn't quite firing the way it used to, it's at least worth a conversation with your doctor. The science is pointing in a compelling direction, and for once, it's pointing right at us.

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