Health & Longevity
Brain Fog & Cognitive Performance
What is brain fog?
Brain fog isn’t a medical diagnosis, but it is a term many people use to describe persistent difficulties with concentration, memory, mental clarity or focus.
It can make everyday tasks feel more demanding, reduce productivity and leave you feeling mentally fatigued, even when you’ve had adequate rest.
Why does it happen?
Brain fog can have many different causes. Often, several factors contribute simultaneously.
- Poor sleep
- Chronic stress
- Hormonal changes
- Nutritional deficiencies
- Thyroid disorders
- Chronic inflammation
- Certain medications
- Genetics
- Lifestyle and environmental factors
Why understanding the cause matters
Brain fog isn’t always simply a problem with concentration. It may reflect poor sleep, nutritional deficiencies, hormonal changes, chronic stress, metabolic health or an underlying medical condition.
Understanding what is contributing to your symptoms allows us to investigate appropriately, identify reversible factors and build a strategy that supports both cognitive function and long-term health.
How do we assess it?
Every assessment begins with understanding.
- Comprehensive medical consultation
- Cognitive symptom history
- Lifestyle assessment
- Medical and family history
- Advanced blood biomarkers, including iron studies, vitamin B12, folate, vitamin D, thyroid function, hormonal markers and inflammatory markers
- Sleep assessment where relevant
- Body composition analysis
- Genetic insights, including methylation and nutrigenomic testing
- Referral for neurological or specialist assessment where indicated
Our approach
Your brain doesn’t function in isolation. Cognitive performance reflects the health of multiple systems working together.
Depending on your assessment, your strategy may include improving sleep, addressing nutritional deficiencies, supporting hormonal health, optimising lifestyle factors and investigating underlying medical conditions where appropriate.
Every recommendation is evidence-based, carefully prioritised and tailored to help you think more clearly, improve resilience and function at your best over the long term.
Recommended Treatments
A personalised, connected plan.
Comprehensive Cognitive Health Assessment
A detailed consultation exploring symptoms, health history, sleep, lifestyle and cognitive concerns.
Blood Biomarkers
- Iron studies
- Vitamin B12
- Folate
- Vitamin D
- Thyroid function
- Hormonal assessment
- Inflammatory markers
Additional Assessment
- Body composition analysis
- Genetic testing, including methylation and nutrigenomic testing where appropriate
- Sleep assessment
- Neurological or specialist referral where indicated
Personalised Management
- Sleep optimisation
- Nutritional optimisation
- Supplement strategy
- Hormonal optimisation
- Lifestyle interventions
- Stress management
- Ongoing review and monitoring
Zarya Insight
Mental clarity doesn’t depend on the brain alone. Sleep, nutrition, hormones, inflammation and overall health all influence how we think, concentrate and perform. Understanding those connections allows us to build a more personalised strategy that supports both cognitive performance and long-term brain health.
From the Journal.
- What Is Brain Fog?
- Why Am I Struggling to Concentrate?
- Sleep and Cognitive Performance
- The Role of Vitamin B12 in Brain Function
- Healthy Ageing and Cognitive Health
Book a Consultation
Begin Your Zarya Journey
Every strategy begins with a conversation. Book a private consultation with our clinical team in Kensington.