IBS and Anxiety: How They're Linked, and What Helps
You’re on your way to something you’ve been looking forward to. Then, somewhere around the second set of traffic lights, your stomach starts. You check where the nearest toilet is. You work out how long you’d need to stay before you could leave without it looking odd. By the time you get there, you’re more worried about your gut than glad to be out, and the worry seems to make your gut worse.
If that’s familiar, here’s the short answer to the question you probably typed. Irritable Bowel Syndrome (IBS) and anxiety are closely linked, and the link runs both ways. Worry can set off symptoms, and living with symptoms gives you plenty to worry about. Your gut and your brain are wired together, and in IBS that wiring is more sensitive than it should be. That’s real, and it’s in your body as well as your head.
Is my IBS caused by anxiety?
Nobody knows exactly what causes IBS. The NHS says the cause is unknown, and lists stress among the things it’s been linked to, alongside a gut that’s oversensitive, food moving through too fast or too slowly, a past bout of gastroenteritis, and a family history of IBS.[1] So anxiety can be part of the picture. It isn’t the whole of it, and not everyone with IBS is anxious.
What’s clearer is that stress and anxiety can set off a flare-up. The NHS lists them as a possible trigger, and it also says flare-ups can happen for no obvious reason.[2] Both of those can be true for you in the same week.
If your symptoms came first and the worry grew on top of them, that’s a recognised pattern too. In October we looked at a large study that followed tens of thousands of people over several years. More people with IBS went on to be diagnosed with anxiety or depression, and more people with anxiety or depression went on to be diagnosed with IBS. The two directions came out at a similar size.[3] You can read about it in Does IBS Cause Anxiety, Or Does Anxiety Cause IBS? And if you’d like to know how the worry tends to behave over time, that’s in The Worry That Grows On Top Of IBS.
Why worry turns up in your stomach
Your gut and your brain talk to each other all day long. Doctors now describe IBS as a disorder of gut-brain interaction, which is the medical way of saying the conversation between the two has gone wrong.[4] One way to picture it is that the gut sends up more alarm signals than usual, and the brain pays them more attention.
That’s why you can feel worry in your stomach before you’ve noticed you’re worried. One woman I spoke to put it like this: “All my stress goes to my stomach. I very rarely get headaches. It goes to my stomach instead.”
In IBS the gut can also be oversensitive, so it can hurt more than you’d expect.[1] We went into that in more detail in Your Head Can Calm Your Gut.
The loop that keeps it going
Here’s how CBT for IBS tends to describe it. Your gut plays up. You start watching it. You plan your day around toilets, you skip the meal out, you eat less before the meeting. All of that makes sense. But a body that’s on watch is a body that’s tense, and tension changes how the gut moves and how much it hurts. So the next flare-up comes along, and the watching gets tighter.
Someone else described it better than I can: “If you’re eating and you’re stressed about the fact that IBS might come on, then the IBS itself is stressing you.”
Two things tend to feed the loop. The first is avoiding things, because each plan you cancel teaches your brain that the plan was dangerous. The second is poor sleep. In the Taiwanese study we covered in October, sleep problems made the link between IBS and anxiety stronger than any of the other health conditions the study looked at, in both directions.[3]
The useful part of seeing it as a loop is that you don’t have to find where it started. There’s more than one place you can start.
What helps with IBS and anxiety?
The UK guidelines take the brain side of IBS seriously. The British Society of Gastroenterology (BSG) guideline strongly recommends two talking approaches made for IBS: IBS-specific cognitive behavioural therapy (CBT) and gut-directed hypnotherapy.[5] It says they can be offered once medicines haven’t helped for twelve months, or earlier, depending on what you’d prefer and what’s available where you live.[6] The guideline also rates the quality of the evidence as low, so it’s a strong recommendation resting on studies that are still limited.
NICE, the guidance your GP works from, says referral for CBT, hypnotherapy or psychological therapy should be considered if your IBS hasn’t responded to medicines after twelve months.[7] Guts UK, the national gut charity, says gut-directed hypnotherapy has evidence that it can help treat IBS, and that online and group versions of these therapies have also been shown to work.[4]
IBS-specific CBT works on what you think and do around your symptoms, like the checking and the cancelling. Gut-directed hypnotherapy uses deep relaxation to teach you skills to manage your symptoms yourself.[4] These are guideline positions about the therapies in general. They aren’t a promise about what will happen for you, and no approach helps everybody.
My own work is cognitive behavioural hypnotherapy, which brings gut-directed hypnotherapy and cognitive behavioural techniques together, with some mindfulness. If you’d like to talk about whether it might suit you, there’s a free 15-minute call on the Work With Me page.
Help on the NHS for the anxiety side
If you live in England, you can refer yourself to NHS Talking Therapies without going through your GP first. The NHS says these therapies may help if you have anxiety or depression alongside a long-term condition, and it names IBS as one example.[8] You don’t need a diagnosed mental health condition to refer yourself. You need to be 18 or over, or 16 or 17 in some areas.[8]
It’s worth knowing that this support is aimed at the anxiety, not at the IBS itself. When they contact you, it’s worth asking whether they have experience with long-term physical conditions.
If you live in Scotland, Wales or Northern Ireland, ask your GP what’s available locally.
Things you can start this week
The NHS advice for IBS includes finding ways to relax and getting plenty of exercise.[9] That sounds obvious, but there’s a reason it matters when worry is part of the picture. The idea is to help your body feel less on alert.
Pick one thing, not five. You could keep the last hour before bed free of work and screens. Or you could say yes to one small plan this week that has an easy way out, and go. If you’d like a recording to do the relaxing for you, there’s a free one called Twelve Minutes of Calm at mindyourguts.co.uk/free-relaxation-page.
When to see a GP
If you haven’t been diagnosed with IBS yet, see a GP first. The NHS says to see a GP if you think you might have IBS and you’ve had symptoms for more than four weeks.[2]
Ask for an urgent GP appointment or get help from NHS 111 if:[2]
you’ve lost a lot of weight for no reason
you’re bleeding from your bottom or have bloody diarrhoea
you find a hard lump or swelling in your tummy
you have shortness of breath, noticeable heartbeats (palpitations) and skin that’s paler than usual
These can be signs of something more serious, so don’t put them down to anxiety.
It’s also worth going back to your GP if worry is taking over your days, whatever’s causing it.
Questions people ask about IBS and anxiety
So is it all in my head? No. IBS is a real problem with how your gut and brain talk to each other, and the gut itself becomes oversensitive. Your head is part of that system, which is why the guidelines include therapies that work on it.
If I sort out my anxiety, will my IBS go away? Nobody can promise that. What the UK guidelines say is that therapies working on the brain side of IBS are worth trying, and worry is one part of the loop you can do something about.
Can anxiety cause IBS symptoms even when I don’t feel anxious? Sometimes. The NHS says stress and anxiety can trigger a flare-up, and that flare-ups can also happen for no obvious reason.[2] Your body can be on alert without you feeling worried, which is one reason a flare-up can arrive on a day you’d have called fine.
What are common anxiety gut symptoms? When you’re worried you might notice a churning or knotted stomach, or need the toilet more often. If you have IBS, worry can bring on your usual symptoms, such as cramps, bloating or diarrhoea. If you have new symptoms, or any of the warning signs above, see your GP.
Should I see a GP or a therapist? If you haven’t been diagnosed, see your GP first. If you have, the guidelines support talking therapies for IBS, and you can ask your GP about them, refer yourself to NHS Talking Therapies in England, or see a private practitioner.
References
NHS. What is irritable bowel syndrome (IBS)? https://www.nhs.uk/conditions/irritable-bowel-syndrome-ibs/what-is-ibs/
NHS. Symptoms of irritable bowel syndrome (IBS). https://www.nhs.uk/conditions/irritable-bowel-syndrome-ibs/symptoms/
Yu YJ, Huang YC, Weng TH, et al. Bidirectional associations between irritable bowel syndrome and psychological distress: a longitudinal population-based study. Psychological Medicine 2026;56:e45. https://doi.org/10.1017/S0033291726103328
Guts UK. Irritable bowel syndrome. https://gutscharity.org.uk/advice-and-information/conditions/irritable-bowel-syndrome/
Vasant DH, Paine PA, Black CJ, et al. British Society of Gastroenterology guidelines on the management of irritable bowel syndrome. Gut 2021;70:1214-1240. https://doi.org/10.1136/gutjnl-2021-324598
Gut blog (BMJ). Practical, multidisciplinary, and evidence-based: updated BSG guidelines on the management of IBS. 31 May 2021. https://blogs.bmj.com/gut/2021/05/31/gut-blog-practical-multidisciplinary-and-evidence-based-updated-bsg-guidelines-on-the-management-of-ibs
NICE. Irritable bowel syndrome in adults: diagnosis and management (CG61), recommendation 1.2.3. https://www.nice.org.uk/guidance/cg61/chapter/Recommendations
NHS. Find NHS talking therapies for anxiety and depression. https://www.nhs.uk/nhs-services/mental-health-services/find-nhs-talking-therapies-for-anxiety-and-depression/
NHS. Diet, lifestyle and medicines for irritable bowel syndrome (IBS). https://www.nhs.uk/conditions/irritable-bowel-syndrome-ibs/diet-lifestyle-and-medicines/
