Crohn’s and Your Mind: The Gut-Brain Connection

Crohn’s does not only live in your gut. If you have ever had a flare make you anxious, or an anxious week make your stomach tie itself in knots, you already know the gut and the brain are on speaking terms. Think of them as two roommates who share one thin wall: when one is loud, the other hears it.

I am not a doctor or a therapist, and this is not medical advice. I wrote this from published research and the Crohn’s & Colitis Foundation (links at the bottom), because I think this subject deserves more honesty than it usually gets.

You are not the only one

A large 2021 review in The Lancet Gastroenterology & Hepatology pooled 77 studies covering more than 30,000 people with IBD. It found:

• About 1 in 3 (32%) had symptoms of anxiety, and about 1 in 4 (25%) had symptoms of depression.
• Both were more common when the disease was active. Anxiety symptoms were about 58% in active disease versus 38% in inactive disease, and depression symptoms were about 39% versus 24%.

These were screening questionnaires, not diagnoses, so they show how often people struggle, not how many have a clinical disorder. The Foundation puts it simply: people with Crohn’s and colitis are two to three times more likely to have anxiety or depression.

So if you have felt this way, it is not weakness, and it is not you “not coping.” It is a very common part of living with an unpredictable disease.

What “gut-brain axis” actually means

It is the two-way communication line between your digestive system and your brain. The pieces include the vagus nerve (a long nerve that carries signals both ways), chemical messengers, your immune system, and the bacteria in your gut. Stress hormones are part of the story too.

Researchers are still working out how much each piece matters in Crohn’s. What I can say is that the link is real and goes both ways. A rough gut can affect your mood. A rough mood can affect how your gut feels.

Stress and flares: what we know and don’t

A lot of us feel that stress sets off flares. Here is what the research shows, and I want to be careful here.

• Studies that follow people over time generally find that higher stress goes along with more symptoms.
• One 6-month study found the link runs both ways: stress was followed by more symptoms, and symptoms were followed by more stress. But when it also measured inflammation with a stool test, stress was linked to symptoms, not to the measured inflammation itself.

In plain terms: stress can make you feel worse, and that matters, but the evidence that it directly drives inflammation is less clear. It also does not mean you caused a flare by being stressed. Crohn’s flares for lots of reasons, and sometimes for none we can see.

What actually helps

This is the part I most want you to take away. There are real things that help mood, and they have been studied in people with IBD.

• Talk therapy, especially CBT (cognitive behavioral therapy). In IBD research, it reduces depression and anxiety, at least in the short term. I will be honest: the evidence that it changes the disease itself, like inflammation or flares, is not there. Do it for your mind, because that alone is worth it.
• Mindfulness. Reviews of IBD studies show it improves quality of life and mood. Much of the worry with Crohn’s is about the unknown, such as the next flare or tomorrow’s symptoms. Mindfulness is practice at sitting with the unknown without letting it run the show.
• Medication. Antidepressants and anxiety medicines can be a good choice. They should be a decision with a doctor who knows your IBD medications, so ask your GI and your prescriber to talk to each other.
• The basics. Sleep, gentle movement and time outside are not cures, but a gut already under stress does not need a bad night’s sleep on top of it. If you want ideas, my posts Stress Out! and Slowing Down are a good start.
• Treating the Crohn’s. Getting the disease itself under control is part of it. Feeling better physically often feels better mentally, too.

Bring it up with your team

• Tell your GI how you are feeling, not just how your gut is. The Foundation recommends talking to your GI provider about screening for anxiety and depression. If they do not ask, bring it up yourself.
• Look for a therapist who understands chronic illness. The Foundation suggests asking how many people with IBD they have seen. The Rome Foundation keeps a directory of mental health professionals experienced with digestive disease. The Foundation also runs peer support groups.

If things feel really dark

If you ever feel hopeless or think about hurting yourself, please reach out right now. In the US, you can call or text 988 (the 988 Suicide & Crisis Lifeline) any time, day or night, for free. If you are in immediate danger, call 911. You deserve help, and it works.

The bottom line

Crohn’s is a body disease with a mind-sized shadow, and looking after both is not extra. It is the job. You can ask for help for your mood the same way you ask for help for your gut.

How do you keep your head above water on the hard days? I would love to hear it on the contact page.

Cover photo by Mr. Sami on Pexels.

Sources

• Barberio et al., Prevalence of symptoms of anxiety and depression in patients with inflammatory bowel disease: a systematic review and meta-analysis, The Lancet Gastroenterology & Hepatology, 2021
• Crohn’s & Colitis Foundation: IBD and Mental Health and Talking to Your Healthcare Team
• Efficacy of different psychological interventions for IBD, systematic review and network meta-analysis
• Cochrane review, Psychological interventions for treatment of inflammatory bowel disease
• Sexton et al., Evidence of bidirectional associations between perceived stress and symptom activity: a prospective longitudinal investigation in IBD, Inflammatory Bowel Diseases, 2017
• 988 Suicide & Crisis Lifeline (SAMHSA)