Do you ever feel like your brain is in a fog?

You’re not alone.

Many people report feeling this way, especially those who have Irritable Bowel Syndrome (IBS).

In this blog post, we will explore the possible link between irritable bowel syndrome and brain fog and discuss some possible causes.

What Is Brain Fog?

Brain fog can be described as a feeling of mental fatigue or confusion.

You may feel like you can’t think straight or that your thoughts are muddled.

Other symptoms can include poor concentration, forgetfulness, and irritability.

For many people, brain fog is a temporary and minor nuisance.

However, for others, it can be a major obstacle to productivity and daily functioning.

What Brain Fog Feels Like

Brain fogginess can feel different for everyone.

Some people with irritable bowel syndrome may only experience it occasionally, while others may feel it all the time.

Brain fog can be mild, moderate, or severe.

It can also come and go, or it can be a constant feeling.

Many people report that brain fog is worse in the morning and improves as the day goes on.

Some common symptoms of brain fog include:

  • Feeling tired or lethargic
  • Difficulty concentrating or focusing
  • Feeling disoriented
  • Inability to think clearly
  • Mood swings

If you’re experiencing any of these symptoms, it’s important to talk to your doctor.

They can help you rule out any underlying medical conditions or other factors and develop a treatment plan to help.

What Causes Brain Fog?

Brain fog can be caused by a variety of factors, including stress, sleep deprivation, medication side effects, and nutritional deficiencies.

IBS may also be responsible for some cases of brain fog.

This is because IBS can cause inflammation in the gut, which can lead to a condition called “itchy gut.”

Itchy gut occurs when the lining of the intestines becomes damaged, allowing bacteria and toxins to leak into the bloodstream.

These toxins can then travel to the brain and contribute to brain fog.

In addition, IBS can also lead to nutrient deficiencies that can cause brain fog.

For example, people with IBS may not absorb enough vitamin B12, which is essential for cognitive function.

Can Gastrointestinal Problems Cause Brain Fog?

There is a growing body of evidence that suggests there is a link between gastrointestinal problems and brain fog.

Irritable bowel syndrome is the most common gastrointestinal disorder, affecting up to 20% of the population.

It can cause a wide range of IBS symptoms, including abdominal pain, diarrhea, constipation, and bloating.

Up to 80% of people with IBS also report experiencing brain fog.

In addition to IBS, other gastrointestinal disorders that have been linked to brain fog include celiac disease, inflammatory bowel disease, and SIBO (small intestinal bacterial overgrowth).

IBS Australian Gut Itch

How Your Gut Causes Brain Fog

The gut-brain connection is a complex one, and scientists are still trying to understand all the ways in which the two are connected.

However, there is evidence to suggest that the gut can influence the brain in several ways.

First, the gut produces about 95% of the body’s supply of serotonin, a neurotransmitter that plays a role in mood, sleep, and cognitive function.

When the gut is inflamed or damaged, it can’t produce enough serotonin, which can lead to brain fog.

Second, the gut contains a large number of nerve cells that communicate with the brain.

These nerve cells can send signals to the brain that affect mood, appetite, and cognitive function.

Finally, the gut is home to a large number of bacteria.

These bacteria produce short-chain fatty acids that can influence brain function.

Can IBS Cause Neurological Symptoms?

In addition to brain fog, IBS can also cause a variety of additional neurological symptoms.

These IBS symptoms can include headaches, fatigue, numbness or tingling in the hands or feet, dizziness, blurred vision, and ringing in the ears.

Brain fog and other neurological symptoms can be frustrating and sometimes serious.

We recommend speaking with your doctor immediately if you’re suffering from neurological symptoms.

How To Defeat Brain Fog

There is no one-size-fits-all answer to this question, as the best way to defeat brain fog will vary from person to person.

However, there are a few general tips that can help.

  • Get enough sleep: Most people need around eight hours of sleep per night. If you’re not getting enough sleep, you’re more likely to experience brain fog.
  • Reduce stress: Stress can aggravate brain fog and make it harder to focus. Try yoga, meditation, or deep breathing exercises to reduce stress levels.
  • Eat healthily: A healthy diet is essential for good cognitive function. Make sure you’re eating plenty of fruits and vegetables, lean protein, and healthy fats.
  • Exercise regularly: Exercise can improve brain function and help to reduce stress levels.
  • Introduce a daily probiotic: Probiotics can help to improve gut health and reduce inflammation.

IBS Australian Gut Itch

How Do You Get Rid Of Brain Fog Fast?

If you’re looking for a quick fix for brain fog, there are a few things you can try.

  • Drink plenty of water: Dehydration can worsen brain fog. Make sure you’re drinking eight glasses of water per day.
  • Eat breakfast: A nutritious breakfast can help to improve cognitive function and gut health.
  • Get some fresh air: Taking a walk outside can help to improve brain function and reduce stress levels.
  • Take a break: If you’re feeling overwhelmed, take a few minutes to yourself to relax and rejuvenate.

While these tips can help to improve brain fog in the short term, the best way to defeat it in the long term is to make lifestyle changes that will support good cognitive function.

Consider looking into a low FODMAP diet to avoid brain fog, bloating, constipation, diarrhea, cramps, excessive gas, and discomfort in your abdomen.


While brain fog can be caused by many different things, gastrointestinal problems may be one of the most common causes.

If you are struggling with brain fog, it is important to seek medical help to determine if there is an underlying cause.

There are many steps you can take to reduce the symptoms of brain fog, and most of them involve taking care of yourself both physically and mentally. 

Dietitians and doctors help patients concentrate on maintaining healthy gut bacteria, boosting their immune system, removing bodily toxins, and reducing inflammation.

About the Author

Isabella Benn is the lead copywriter and content wizard at Health Apes with an expertise in health research. She specializes in gut health, nutrition, food and recipes.