Harvard Medical: Stress and functional GI disorders

Posted on June 29, 2026 by michelleclarke2015
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You may feel nauseated before giving a presentation or feel intestinal pain during times of stress.

You’re not imagining it. The gut and the brain influence each other.

For example, stress (or depression or other psychological factors) can affect movement and contractions of the gastrointestinal tract, as well as sensations perceived to come from the gut.


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When your digestive system is running smoothly, you tend not to think about it. Once trouble begins, your gut — like a squeaky wheel — suddenly demands your attention. This Special Health Report, Help for Your Sensitive Gut, covers the major sources of gastrointestinal distress: irritable bowel syndrome, gastric reflux, upset stomach, constipation, diarrhea, and excess gas. 

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There is also emerging evidence that psychosocial factors may alter the types of bacteria that live in your gut, which can contribute to chronic inflammation. In addition, research suggests that some people with functional GI disorders perceive pain more intensely than other people do because their brains do not properly regulate pain signals from the digestive tract.

In other words, stress can make the existing pain from functional GI disorders seem even worse. These observations suggest that at least some people with functional GI conditions might find relief with therapy to reduce stress or treat anxiety or depression. And sure enough, one review of 32 studies showed that people treated with psychologically based approaches had greater improvement in their symptoms compared with people who received conventional medical treatment.

Integrative therapy for functional GI disorders shifts the focus away from pinpointing a specific cause for symptoms to engaging patients in activities and therapies that can help in managing symptoms and increasing quality of life. This may include the use of medications, dietary changes, and stress-reduction techniques.When assessing whether your gastrointestinal symptoms – such as heartburn, abdominal cramps, or loose stools – are related to stress, watch for these other common symptoms of stress and report them to your clinician as well.

Physical symptoms stiff or tense muscles, especially in the neck and shoulders headaches sleep problems shakiness or tremorsrecent loss of interest in sexweight loss or gain restlessness.

Behavioral symptoms procrastination difficulty completing work assignments changes in the amount of alcohol or food you consume taking up smoking, or smoking more than usual grinding teeth rumination (frequent talking or brooding about stressful situations).

Emotional symptoms crying overwhelming sense of tension or pressure trouble relaxing increased desire to be with or withdraw from others nervousness quick temper depression poor concentration trouble remembering things loss of sense of humor indecisiveness.For more on the connection between brain health and gut health, read The Sensitive Gut, a Special Health Report from Harvard Medical School.
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About michelleclarke2015

Life event that changes all: Horse riding accident in Zimbabwe in 1993, a fractured skull et al including bipolar anxiety, chronic fatigue …. co-morbidities (Nietzche 'He who has the reason why can deal with any how' details my health history from 1993 to date). 17th 2017 August operation for breast cancer (no indications just an appointment came from BreastCheck through the Post). Trinity College Dublin Business Economics and Social Studies (but no degree) 1997-2003; UCD 1997/1998 night classes) essays, projects, writings. Trinity Horizon Programme 1997/98 (Centre for Women Studies Trinity College Dublin/St. Patrick's Foundation (Professor McKeon) EU Horizon funded: research study of 15 women (I was one of this group and it became the cornerstone of my journey to now 2017) over 9 mth period diagnosed with depression and their reintegration into society, with special emphasis on work, arts, further education; Notes from time at Trinity Horizon Project 1997/98; Articles written for Irishhealth.com 2003/2004; St Patricks Foundation monthly lecture notes for a specific period in time; Selection of Poetry including poems written by people I know; Quotations 1998-2017; other writings mainly with theme of social justice under the heading Citizen Journalism Ireland. Letters written to friends about life in Zimbabwe; Family history including Michael Comyn KC, my grandfather, my grandmother's family, the O'Donnellan ffrench Blake-Forsters; Moral wrong: An acrimonious divorce but the real injustice was the Catholic Church granting an annulment – you can read it and make your own judgment, I have mine. Topics I have written about include annual Brain Awareness week, Mashonaland Irish Associataion in Zimbabwe, Suicide (a life sentence to those left behind); Nostalgia: Tara Hill, Co. Meath.
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