Journal #24. Brain fog: why your thinking can feel slower than usual.
Brain fog: why your thinking can feel slower than usual
Most people experience brain fog at some point.
You may lose your train of thought mid-sentence, struggle to find the right word, forget why you walked into a room or feel mentally tired even when your body is not. Tasks that would normally feel straightforward can take more effort, and decisions can feel harder than they should.
“Brain fog” is not a medical diagnosis. It is a useful everyday term for a group of symptoms involving mental clarity, attention, memory and processing speed.
Because it can have many causes, the most helpful question is not “How do I get rid of brain fog quickly?” but “What might be contributing to it?”
Common signs of brain fog
Brain fog can look different from person to person. Common experiences include:
- Difficulty concentrating or staying on task
- Forgetfulness or losing your train of thought
- Slower thinking or difficulty finding words
- Mental fatigue
- Feeling less decisive or less mentally sharp
- A sense of being mentally “cloudy” or disconnected
If these symptoms are new, persistent, worsening or affecting daily life, it is important to speak with a GP or qualified health professional. Brain fog can sometimes be linked to an underlying health issue that needs assessment.
Common contributors to brain fog
Stress and mental overload
Ongoing stress can make it harder to focus, remember information and think clearly. When the brain is constantly scanning for the next demand, there is less capacity available for concentration and decision-making.
Poor sleep
Sleep is essential for memory, attention and recovery. Even a few nights of disrupted sleep can affect mental clarity, patience and energy the following day.
Hormonal changes
Hormonal changes, including those experienced during perimenopause and menopause, can affect sleep, mood, attention and memory. Thyroid changes and other health conditions can also influence cognitive symptoms.
Nutrition and hydration
Regular meals, adequate hydration and a varied diet all support steady energy and brain function. Deficiencies in nutrients such as iron, vitamin B12 or folate can contribute to fatigue and cognitive symptoms, so it is worth seeking medical advice rather than self-diagnosing.
Illness, medication and other health factors
Brain fog can occur during or after illness, with some medications, during periods of pain or inflammation, and alongside conditions such as anxiety or depression. It is not possible to diagnose neuroinflammation from brain fog alone.
Practical ways to support mental clarity
There is no one-size-fits-all answer, but these foundations can make a meaningful difference:
- Protect sleep. Aim for a consistent wake-up time and a realistic wind-down routine.
- Reduce mental switching. Focus on one demanding task at a time and take short breaks between tasks.
- Move daily. A walk, strength session or any regular movement can support mood, circulation and mental energy.
- Eat and hydrate consistently. Choose regular meals with protein, fibre and colourful plant foods, and drink enough water throughout the day.
- Manage stress early. Time outdoors, breathing exercises, mindfulness, boundaries and connection can all help.
- Check in with a professional. Persistent symptoms deserve proper assessment, particularly if they occur alongside significant fatigue, mood changes, headaches, dizziness, neurological symptoms or changes in memory.
Support your cognitive performance
The habits you practise every day have the greatest influence on how your brain performs.
For people looking for additional support, Brain Health was developed by Natural Medicine Neuroscientist Megan Wilks and has been trusted by practitioners since 2015.
Its botanical formulation includes selected flavonoid-rich extracts designed to support cognitive function, mental clarity, healthy mood balance and everyday brain resilience.
Brain Health is intended to complement healthy lifestyle habits. It is not intended to diagnose, treat or replace professional care for brain fog, hormonal conditions, cognitive decline or other medical concerns.
