Bowel Symptoms Eased With Treatment, but Anxiety and Low Mood Barely Changed in Newly Diagnosed IBD

TL;DR: A study published in 2026 in Norway followed 304 adults who had just been diagnosed with inflammatory bowel disease, a long-term inflammation of the gut, and asked them about anxiety and low mood at diagnosis and after 3 months of treatment.

Most people's bowel disease calmed down, but anxiety and depression scores dropped only slightly, below a benchmark for meaningful improvement cited by the researchers. People with worse gut symptoms reported more anxiety and low mood.

Source: Nursing Reports (2026) | Sagen et al.

Learning you have inflammatory bowel disease (IBD), a lifelong gut condition, often in your 20s or 30s, can be frightening. Diarrhea, pain and fear of flare-ups can upend work and social life.

A 2026 study in Nursing Reports, led by nurse researcher Åse Margrete Sagen at Stavanger University Hospital, asked a practical question: once treatment starts and the gut settles, does anxiety and low mood settle too?

Who Was Followed?

Between 2012 and 2019, the hospital invited every adult newly diagnosed with IBD, before any IBD medicine was started.

• Completed both visits: 304 people, average age 38; 54% men
• Diagnosis: 74% had ulcerative colitis, which affects the large bowel; 26% had Crohn's disease, which can affect any part of the gut
• Treatment: 93% started standard first-line medicines such as anti-inflammatory drugs or steroids; 7% started stronger biologic drugs

At diagnosis and again 3 months later, each person filled in a 14-item hospital questionnaire on anxiety and depression. A score of 8 or more on either part counted as notable symptoms. Doctors also rated gut symptoms with standard scores, and blood and stool tests measured inflammation.

Did Mood Follow the Gut?

Gut symptoms improved sharply. Remission rose from 19% to 78% in ulcerative colitis and from 54% to 79% in Crohn's disease.

Mood changed far less:

• Anxiety: average score down 0.75 points out of 21
• Depression: average score down 0.57 points out of 21
• Benchmark cited from cardiovascular research: about 1.7 points

After accounting for gut symptoms, age, sex and other factors, the team found no clear change in anxiety or depression over the 3 months.

What Went With More Distress?

• Worse gut symptoms: the strongest link, especially the Crohn's symptom score, which includes pain and general well-being
• Younger age: more distress at diagnosis; this link faded by 3 months
• Being a woman: more anxiety at both visits, though the gap was small; no gap for depression
• Type of IBD: no difference between ulcerative colitis and Crohn's disease

Lab results told a different story. Stool calprotectin, a marker of gut inflammation, plus body weight and vitamin levels showed no link with anxiety or depression. Blood CRP had only a weak link with depression symptoms.

What Limits These Findings?

• Only 3 months: Low mood may take longer to lift than gut symptoms.
• One hospital: Stavanger, Norway, with patients recruited up to 2019; IBD care has changed since.
• Dropouts: 47 of 351 enrolled did not finish, and they may have differed from those who did.
• Not measured: Fatigue, coping, sleep, social support and other life stresses.
• Self-report: Anxiety and depression were questionnaire scores, not diagnoses.

Should IBD Care Check Mood From Day One?

Sagen and colleagues argued that calming the gut alone won't reliably ease distress, so IBD nurses should screen for anxiety and depression from diagnosis onward, with extra attention to younger patients and women. Whether early screening and support would improve how patients feel over the longer term is the next question.