Skip to content
🐣 10% discount with code: PÅSK2026 🐣
Registered healthcare provider – safe and secure
Wide range of MRI and blood tests

Brain Fog and Concentration Difficulties – Is it Stress or Something Else?

PublishedMarch 19, 2026
Brain Fog and Concentration Difficulties – Is it Stress or Something Else?

You lose your train of thought mid-sentence, misplace your keys for the third time in a week, and feel as though your head is filled with cotton wool. Sound familiar? The concept of brain fog has become one of the defining health issues of our time. But while it’s often brushed off as the result of being 'a bit busy at work,' it can actually be the body’s way of signaling something far more specific than just general stress.

10% discount on testmottagningen.se with the code: PÅSK2026 Health checks for increased well-being

Go to the campaign Browse healthchecks
Trustpilot

Contents

Quick version

What is brain fog and why do we get it?

Brain fog is not a medical diagnosis in itself, but a collective name for a range of cognitive symptoms including mental fatigue, difficulty focusing, and slower thinking.

In a world that constantly demands our attention, it's easy to blame everything on stress. However, when the fog refuses to lift despite rest, it's time to look closer at lifestyle and underlying factors.

The role of lifestyle: Fuel and rest for the brain

Our brain requires the right conditions to function. Key pillars include:

  • Sleep: During deep sleep, the glymphatic system clears out waste products from the brain.
  • Diet: High-processed foods can cause inflammation linked to cognitive sluggishness, while Omega-3s and antioxidants support nerve connections.

When brain fog hides something else: The connection to MS

Cognitive impact is one of the most common yet 'hidden' symptoms of Multiple Sclerosis (MS) . Inflammation in the central nervous system can slow down nerve signals, mimicking burnout or age-related forgetfulness.

The importance of screening and seeking answers

If lifestyle changes don't help, it's important to investigate underlying factors such as:

Identifying the actual cause ensures the right treatment can be started in time.

Written by: The team at Testmottagningen.se · Reviewed by:The medical team at Testmottagningen.se

Relaterade tester

Vitamin B12
  • Measures your levels of vitamin B12.
  • Indication of vitamin B12 deficiency.
  • Low levels can lead to anemia.

179 kr

Iron

Iron

Iron deficiency test
  • Measuring your iron levels.
  • Get an insight into the body's iron stores.
  • Indication of possible iron deficiency.

99 kr

Hormonal balance
  • Health check for hormonal balance.
  • Hormonal analysis for you as a woman.
  • Get insight into your hormonal levels.

795 kr

Call included
MRI Brain

MRI Brain

Magnetic resonance imaging
  • MRI brain – with contrast if needed.
  • For headaches, dizziness, memory problems or neurological symptoms.
  • Painless and radiation-free – even in acute conditions.
  • Referral and specialist opinion included.

6 795 kr

Cart

The basket is empty.

Hos oss får du tillgång till Sveriges bredaste utbud av blodprov, hälsokontroller och MR – med läkare som alltid granskar dina provsvar.

Select tests
Sampling fee
Total
Sampling fee?

The sample collection fee is a fixed cost that refers to the visit to the clinic where you submit your sample. The fee is not affected by how many tests you have ordered, but varies depending on the order value:

Free sampling fee

For purchases over 1 000 SEK, the sampling fee is included.