Can Anxiety Cause Stomach Pain? Understanding the Gut-Brain Connection
Ever noticed your stomach seems to know when you're stressed?
Perhaps you get that familiar knot in your stomach before an important meeting.
Or your stomach starts churning when you're worried.
Maybe you suddenly need the toilet when you're feeling anxious.
And sometimes, you might experience genuine stomach pain without understanding why.
So, can anxiety cause stomach pain?
Yes. Anxiety and stress can affect your digestive system and can cause symptoms such as stomach cramps, bloating, nausea, indigestion, constipation and diarrhoea.
But there's something important to understand.
Stomach pain isn't always caused by anxiety.
There are many possible reasons for digestive symptoms, so if you're experiencing persistent, severe or unexplained pain, it's important to speak to your GP rather than assuming anxiety is the cause.
With that in mind, let's look at the fascinating relationship between your mind, your nervous system and your gut.
Why does anxiety affect your stomach?
Your brain and digestive system are in constant communication.
Your gut isn't simply a tube that processes food. It is connected to your nervous system and is constantly sending and receiving signals.
So when you're anxious, your digestive system can be affected too.
Think about what happens when you're suddenly frightened.
Your heart rate changes.
Your breathing changes.
Your muscles tense.
Your attention becomes focused on what's happening around you.
Your digestion can change as well.
The NHS explains that stress can affect digestion differently from person to person. For some people, it can slow digestion and contribute to bloating, pain and constipation. For others, it can speed things up and contribute to diarrhoea or more frequent trips to the toilet.
This is one reason anxiety can feel so physical.
What is the gut-brain connection?
You may have heard the phrase "gut-brain connection" or "gut-brain axis".
Put simply, it describes the two-way communication between your digestive system and your brain.
Your brain can influence what happens in your gut.
But your gut can also send signals back to your brain.
This helps explain why emotions can affect digestion, and why ongoing digestive problems can affect how you feel emotionally.
It's not simply:
"I'm anxious, so my stomach hurts."
It's much more interconnected than that.
You might experience a stressful situation.
Your body responds.
Your digestion changes.
You notice the sensation.
You become worried about what it means.
That worry increases your anxiety.
And the cycle can continue.
Why do I get stomach cramps when I'm anxious?
Stomach cramps are a recognised physical symptom of anxiety.
You may notice them particularly during periods of intense stress.
Perhaps you're worried about work.
You're going through relationship difficulties.
You have an upcoming event that you're dreading.
Or you're dealing with something that has been playing on your mind for weeks.
Your stomach may begin to feel tight, unsettled or painful.
And sometimes you don't even consciously feel anxious.
That's because your body's stress response can happen automatically.
You don't necessarily have to be sitting there thinking "I'm anxious" for your body to respond to stress.
Can anxiety cause bloating?
Yes, anxiety and stress can be associated with digestive symptoms including bloating.
You might notice that your stomach feels full, uncomfortable or swollen when you're going through a particularly stressful period.
And if you've experienced this several times, you may start anticipating it.
"I always get bloated when I'm stressed."
That thought can then make you more aware of what's happening in your stomach.
You might start checking how your stomach feels after eating.
You may begin avoiding certain foods.
You might spend more time searching for explanations online.
And before long, you're paying constant attention to your digestion.
This can be particularly difficult if health anxiety is part of the picture.
Can anxiety cause nausea?
It can.
Feeling sick or nauseous is a recognised physical symptom of anxiety and panic.
For some people, nausea is one of the first signs that they're becoming anxious.
You might notice it before a presentation, during a difficult conversation or when you're worrying about something.
And nausea itself can become frightening.
You might think:
"Why do I feel sick?"
"Am I going to be ill?"
"What if this gets worse?"
Those thoughts can increase your anxiety, which can make you notice the sensation even more.
Again, you can see how the mind and body can become caught in a loop.
Can anxiety cause diarrhoea or constipation?
It can.
Changes in bowel habits are among the digestive symptoms associated with anxiety.
Stress can affect the way your digestive system functions. For some people, things seem to speed up, leading to diarrhoea or an urgent need to use the toilet. For others, digestion can slow down, contributing to constipation.
This is why some people find themselves needing the toilet before an important event.
A first date.
An interview.
A flight.
A presentation.
A stressful journey.
It's not unusual for the stomach to become part of the body's response to anticipation and stress.
What about anxiety and IBS?
This is where the gut-brain connection becomes particularly interesting.
Irritable bowel syndrome (IBS) is a common condition that can cause stomach pain or cramps, bloating, diarrhoea and constipation. Symptoms can come and go, and the NHS lists stress and anxiety among potential triggers for IBS flare-ups.
This doesn't mean that IBS is "all in your head."
Far from it.
IBS is a real physical condition.
But the relationship between the brain, nervous system and gut can influence how symptoms develop and how they're experienced.
And this can create a frustrating cycle.
Stress → gut symptoms → worry about symptoms → more stress → worsening gut symptoms
This is one reason addressing stress and anxiety can be an important part of managing IBS for some people.
The NHS also notes that therapy may help people with long-term IBS when stress or anxiety is triggering symptoms or making the condition harder to cope with.
Why does worrying about your stomach make things worse?
This is something that's particularly relevant if you have health anxiety.
Imagine you notice a slight stomach ache.
Normally, you might barely register it.
But if you've become worried about your health, your thoughts might immediately go to:
"What's causing this?"
"Could it be something serious?"
"What if I've missed something?"
You might search your symptoms online.
Then check your stomach.
Then ask someone for reassurance.
Then search again.
The NHS identifies frequent body checking, reassurance seeking and repeatedly searching health information as behaviours that can occur with health anxiety.
The problem is that these behaviours can keep your attention focused on your body.
And the more closely you monitor something, the more sensations you're likely to notice.
The anxiety–stomach pain cycle
It's useful to think about this as a cycle rather than a single cause.
For example:
Stress → changes in digestion → stomach sensation → worry → increased anxiety → more noticeable symptoms
The original stomach sensation might have been relatively minor.
But once your brain decides it could represent danger, your attention becomes focused on it.
You start monitoring.
You start worrying.
And your body responds to that worry.
This doesn't mean you're imagining the symptoms.
The symptoms are real.
It means that anxiety, attention and physical sensations can influence one another.
The NHS also recognises that physical symptoms and anxiety can sometimes create a vicious circle, with physical symptoms contributing to anxiety and anxiety making physical symptoms worse.
Why do I get a "knot" in my stomach when I'm nervous?
That familiar feeling of having a "knot in your stomach" is a good example of the mind-body connection.
You don't have to be consciously thinking about your stomach.
Your body may simply respond to a stressful or emotionally significant situation.
Perhaps you're waiting for an important phone call.
You're about to walk into an interview.
You're meeting someone for the first time.
You're waiting for an outcome you can't control.
Suddenly, your stomach feels different.
It's one of those moments when you realise that emotions aren't just thoughts.
You can feel them physically.
Can hypnotherapy help with anxiety-related stomach problems?
This is where hypnotherapy for anxiety may be helpful.
The focus isn't on assuming that every stomach problem is caused by anxiety.
Instead, if you've been medically assessed and anxiety or stress appears to be contributing to your symptoms, we can look at the patterns surrounding them.
For example:
What tends to happen before your stomach symptoms appear?
Are there particular situations that trigger anxiety?
Do you constantly monitor your digestion?
Have you started avoiding certain situations because you're worried about needing the toilet?
Do you spend a lot of time worrying about what your symptoms might mean?
What would you like to be able to do without worrying about your stomach?
Solution-Focused Hypnotherapy focuses on where you want to get to rather than endlessly analysing everything that has gone wrong.
Through a relaxed, focused state, we can work on patterns of anxious thinking and help you develop a different response to stress.
The aim isn't to tell your body:
"Stop having symptoms."
It's to help reduce the anxiety and fear surrounding those symptoms when anxiety is part of the picture.
What can you do if anxiety is affecting your stomach?
If you've been medically assessed and anxiety appears to be contributing to your digestive symptoms, there are some simple things you can try.
Notice the pattern
Start paying attention to when your symptoms appear.
Do they happen before stressful events?
During periods of poor sleep?
When you're under pressure?
After spending a lot of time worrying?
You don't need to obsessively track every sensation. The aim is simply to notice whether there is a pattern.
Give your attention something else
If you find yourself constantly checking how your stomach feels, gently redirect your attention.
You don't need to force the sensation away.
Simply notice it and return your attention to what you were doing.
Look at your stress levels
Sometimes your stomach is giving you information about what's happening elsewhere in your life.
If you've been under constant pressure, rarely switching off and feeling as though you're always "on", your body may be responding to that ongoing stress.
The NHS recommends looking at stress management as part of supporting digestive health, particularly where stress is contributing to symptoms.
Don't automatically blame anxiety
This one is important.
If you're experiencing ongoing stomach pain, don't simply decide that it's anxiety.
There are many causes of abdominal and digestive symptoms.
Getting appropriate medical advice can help rule out other causes and give you a clearer picture of what's happening.
When should you see your GP about stomach pain?
Anxiety can cause or contribute to digestive symptoms, but persistent or unexplained stomach pain shouldn't automatically be put down to anxiety.
Speak to your GP if your symptoms are persistent, getting worse or you're concerned about them.
If you think you may have IBS and you've had symptoms for more than four weeks, the NHS recommends speaking to your GP so that they can assess your symptoms and rule out other conditions.
You should also seek medical advice if you experience symptoms such as unexplained weight loss, blood in your stools, a lump or swelling in your abdomen, or other symptoms that concern you.
Getting checked doesn't mean you're overreacting.
It means you're looking after yourself.
And if everything has been checked and anxiety turns out to be part of the picture, you can then start working on that side of things with greater confidence.
Your gut and your brain are more connected than you might think
Your stomach isn't separate from what's happening in your mind.
Stress can affect digestion.
Anxiety can affect your gut.
And ongoing digestive symptoms can understandably affect how you feel emotionally.
It's a two-way relationship.
So if you've noticed that your stomach seems to react whenever you're stressed, you're not imagining the connection.
Your body and brain are communicating all the time.
And if anxiety has become part of that cycle, it is possible to work on the patterns that are keeping it going.
You don't have to spend your life worrying about your stomach, checking symptoms or avoiding situations because you're afraid of what might happen.
If anxiety is affecting your relationship with your body and your everyday life, Solution-Focused Hypnotherapy can help you work towards feeling calmer, more confident and less controlled by anxiety.
Frequently Asked Questions
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Yes. Anxiety can cause physical digestive symptoms including stomach cramps, indigestion, bloating, nausea, constipation and diarrhoea. However, stomach pain can have many causes, so persistent or unexplained symptoms should be medically assessed.
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Anxiety and stress can affect the way your digestive system functions. Stress can slow digestion in some people and speed it up in others, which can contribute to symptoms such as pain, bloating, constipation or diarrhoea.
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Yes. Stomach cramps are one of the physical symptoms that can occur with anxiety.
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Yes. Bloating and nausea can occur alongside anxiety and stress, although they can also have many other causes.
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Stress and anxiety can trigger IBS flare-ups in some people. IBS commonly involves stomach pain or cramps, bloating, diarrhoea and constipation.
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The gut-brain connection refers to the two-way communication between the digestive system and the brain. This helps explain why emotions and stress can affect digestion, while ongoing digestive symptoms can also affect how you feel emotionally.
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If anxiety or stress is contributing to your digestive symptoms, hypnotherapy may help you work on the anxiety, worry and behavioural patterns surrounding those symptoms.
It isn't a treatment for unexplained stomach pain, IBS or other digestive conditions, so appropriate medical assessment remains important.