If you’ve ever walked into a room and forgotten why you’re there, struggled to find the right words mid-sentence, or felt like your thoughts are moving through treacle… you’re not alone.
Brain fog is one of the most common concerns I see as a nutritional therapist, particularly in those experiencing ongoing fatigue, digestive issues, blood sugar imbalances, weight gain or hormonal changes such as perimenopause and menopause. It’s not a medical condition but rather a signal and a real by-product of modern life.
The reassuring part? There are simple, foundational ways to begin supporting your brain and improving clarity.
Here are the 5 top tips to help you:
1. Stay Hydrated and Get Plenty of Fresh Air
The brain is made up of around 75% water, yet many people go through the day mildly dehydrated without realising. Even small drops in hydration can affect concentration, energy, and memory.
Aim for around 1.5–2 litres of water daily, adjusting for your needs.
Oxygen is equally important. The brain uses around 20% of the oxygen we breathe, so when we’re sedentary, indoors, or under stress (which often leads to shallow breathing), it can contribute to that sluggish, foggy feeling. Getting outside for even 20–30 minutes a day can help improve both energy and mental clarity.
2. Feed Your brain
What you eat has a direct impact on how your brain functions. Highly processed foods, excess sugar, alcohol, and trans fats can disrupt communication between brain cells and drive inflammation, both of which can contribute to brain fog, low mood, and fatigue.
This is particularly relevant for those experiencing:
- Blood sugar imbalances or type 2 diabetes
- Digestive issues such as IBS, bloating, or food intolerances
- Chronic inflammation or autoimmune conditions
The brain is one of the most fat-rich organs in the body, so it relies heavily on healthy fats to function well.
Focus on including:
- Omega-3 rich foods (oily fish, flaxseeds, walnuts)
- Avocados, nuts, and seeds
- Quality protein
- A wide variety of colourful, whole foods
For women in perimenopause and menopause, these choices become even more important. Hormonal shifts, particularly changes in oestrogen can affect memory, focus, mood, and even increase susceptibility to blood sugar fluctuations and weight changes.
3. Prioritise Restorative Sleep
Sleep is when the brain clears toxins, repairs, and resets. Without adequate sleep, cognitive function declines, often showing up as poor concentration, low energy, and emotional changes. If you’re dealing with ongoing fatigue, chronic fatigue syndrome, or disrupted sleep (which is very common during menopause), this becomes a key area to support.
Simple steps can help:
- Keep a consistent sleep and wake time
- Reduce screen exposure before bed
- Create a calming wind-down routine
Sleep is not a luxury — it’s foundational for brain and hormone health.
4. Build in Rest and Mental Space
Many people experiencing brain fog are also juggling constant demands — work, family, and the mental load that comes with it. Over time, this leads to nervous system overload, which can worsen fatigue, low mood, and concentration issues. True productivity comes from balance, not constant output.
Building in short breaks, stepping away from screens, and allowing moments of stillness can help your brain reset and improve focus throughout the day.
5. Incorporate Regular Exercise into your Routine
Our bodies and minds are intimately connected and the physical activity we can do affects the brain function in a positive way. Movement is one of the most effective ways to support brain function. It increases blood flow and oxygen to the brain, supports mood, and helps regulate stress hormones, all of which play a role in reducing brain fog.
It can also support:
- Weight management
- Blood sugar balance
- Bone and heart health (particularly important during and after menopause)
No need to spend hours on the treadmill or in the gym. Walking, yoga and cycling can all be incredibly beneficial when done consistently.
A Final Note
Brain fog is often your body’s way of asking for support, not something to push through. Whether it’s linked to lifestyle, stress, digestive health, chronic inflammation, weight gain or hormonal changes such as menopause, there are always ways to begin supporting your system back towards clarity and balance. And often, it’s the small, consistent changes that make the biggest difference over time and you don’t have to navigate it alone – I offer personalised nutritional therapy packages tailored to your individual needs.
For those looking to combine nutrition with movement, personal training sessions are also available to support both physical and mental wellbeing.