Brain fog, fatigue, focus that drops by 2pm. There’s a biological explanation that is measurable and addressable.
The Signs
Something has changed. You can feel it, even if you can’t quite explain it to anyone else. It’s not one thing. It’s a collection of small things that add up to a feeling you didn’t used to have.
0%
of dementia-free adults aged 40–79 report memory-related cognitive symptoms. Only 18% have raised it with a doctor.1
0%
increase in poor processing speed linked to raised inflammatory markers.2
0%
of patients with diagnosed hypothyroidism said their brain fog began before their thyroid was diagnosed.3
These aren’t just feelings. They’re signals.
Brain fog symptoms
Five of the most common ways it shows up.
Do you read the same email three times and still don’t know what it said?
The words are right there, so why won’t they come?
Have you ever walked into a room and then forgotten why you’re there?
You run a team, chair meetings, make decisions all day. By 3pm, could you tell someone what you decided at 10?
Do you keep quiet about it because it sounds like you’re describing getting old?
Real patients
Why brain fog is complicated
A few systems out of range, at the same time.
What you’re experiencing doesn’t come from one place. Your clarity, your memory, your focus sit at the intersection of multiple systems.
Your brain uses 20% of your body’s energy but is only 2% of its mass. Iron carries oxygen to it. B12 keeps signals firing. Thyroid sets the pace. Glucose fuels it. When any sit low, your brain feels it first.
Oestrogen receptors cluster in the brain regions that handle memory and executive function. Testosterone supports processing speed and verbal recall in both men and women. As these decline, your brain loses the hormonal signalling it depends on.
Deep sleep is when your brain clears metabolic waste, consolidates memory, and repairs neural connections. But sleep quality isn’t only about habits. Inflammation, hormonal shifts, and unstable blood glucose fragment your sleep architecture from the inside.
Brain fog in women
If brain fog has arrived in your late 30s, 40s or 50s, it might not be stress, screens or sleep. It might be perimenopause. 60% of women in the transition report cognitive symptoms - memory lapses, word-finding difficulty and slower thinking.⁶
A brain fog blood test looks at oestradiol alongside iron, thyroid, glucose, and inflammation among many others in our panel.
Perimenopause can start in your late 30s and last a decade. Across that window, oestradiol fluctuates rather than simply declining. Your brain is built to feel every fluctuation. Foggy thinking. Broken sleep. Words that won’t come. Lower stress tolerance. They arrive together because they share a cause.
The information about perimenopause has changed substantially in the last decade. The cultural memory hasn’t caught up. A generation of misinformation about hormone therapy went largely unrevised in public conversation. Most has now been re-examined. Many women have only heard the old version.
In retrospect, I was in perimenopause from my early 40s. Increasingly foggy. Tired. Sleepless nights. I didn’t have night sweats or anything traditionally associated with menopause, so I never thought it could be hormonal. That went on for close to a decade. I wish I’d known to ask the right questions earlier.
The Process
STEP ONE
Your history matters as much as your blood work.
A detailed intake covering your symptoms, history, lifestyle, and what you’ve already tried. Your doctor reads all of it before your blood work is even ordered.
STEP TWO
Fifteen minutes at a local lab. That’s it.
Visit a pathology collection centre at a time that suits you. We test 80+ biomarkers across six biological systems, with results back within three business days.
STEP THREE
Your doctor has already spent time with your results.
A 40-minute video consultation with a doctor who has reviewed your intake, your blood work, and which systems are likely involved before you speak. Not a rushed appointment. A prepared, focused conversation about what’s happening in your biology and what to do about it.
STEP FOUR
Built on your results, not a template.
Lifestyle and supplement recommendations grounded in your blood work. Where your results indicate treatment is clinically appropriate, your doctor can prescribe as part of your plan. We measure your starting point and your progress at the end of the plan.
STEP ONE
Your history matters as much as your blood work.
A detailed intake covering your symptoms, history, lifestyle, and what you’ve already tried. Your doctor reads all of it before your blood work is even ordered.
STEP TWO
Fifteen minutes at a local lab. That’s it.
Visit a pathology collection centre at a time that suits you. We test 80+ biomarkers across six biological systems, with results back within three business days.
STEP THREE
Your doctor has already spent time with your results.
A 40-minute video consultation with a doctor who has reviewed your intake, your blood work, and which systems are likely involved before you speak. Not a rushed appointment. A prepared, focused conversation about what’s happening in your biology and what to do about it.
STEP FOUR
Built on your results, not a template.
Lifestyle and supplement recommendations grounded in your blood work. Where your results indicate treatment is clinically appropriate, your doctor can prescribe as part of your plan. We measure your starting point and your progress at the end of the plan.
The starting point
80+ biomarker blood panel
Over 80 markers across six biological systems.
$645
Biological age test
How your biology compares to your chronological age.
$58
40-minute doctor consultation
Your doctor reads your full panel before you speak. A prepared conversation.
$450
Report + 90-day optimisation plan
Built around your results. Every recommendation ties back to something specific.
Included
How to get rid of brain fog starts with what’s causing it.
Brain fog is a symptom, not a diagnosis. It can involve multiple biological systems at once, which is why investigating one marker at a time rarely explains what’s going on.
$995. Includes pathology, a clinical report, and an extended doctor consultation via telehealth. No hidden fees.
Stress is genuinely a factor, but it’s rarely the full explanation. People with high stress are three times more likely to report brain fog, which means stress often coexists with biological causes rather than being the sole one. The question is whether something else is contributing alongside it.
80+ biomarkers across six biological systems, assessed in a single panel. One doctor reviews everything before your consultation, with the clinical tools to act on what they find.
Your panel includes a full hormonal profile alongside your metabolic, inflammatory, sleep, gut, and brain chemistry results. If your doctor identifies a hormonal contribution to what you’re experiencing, they discuss what that means and what your options are. Where treatment is clinically appropriate, your doctor can prescribe as part of your plan.
No. Your GP manages disease, acute care, and general health. VitalYOU investigates the biological systems that drive how you feel and perform day to day.
VitalYOU is designed for persistent brain fog that hasn’t been adequately explained, not for managing diagnosed neurological conditions. If you have concerns about dementia, we’d recommend speaking with your GP or a neurologist.
Most supplements are chosen based on guesswork, not blood work. A panel tells you which ones are actually doing something, which ones you don’t need, and what’s missing that supplements alone won’t fix.
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