Understanding How Mental Health Influences IBD Outcomes: A Review of Potential Culprit Biological Mechanisms.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing mechanistic and observational literature without systematic search methodology
PubMed 41462928 · doi:10.3390/biomedicines13122916
What was done
This narrative review synthesized existing literature on the bidirectional epidemiology, biological mechanisms, and microbiome alterations connecting anxiety and depression with inflammatory bowel disease (Crohn's disease and ulcerative colitis) outcomes.
What was found
A prior diagnosis of depression is associated with an increased risk of developing inflammatory bowel disease, and comorbid anxiety or depression doubles the odds of adverse outcomes. Antidepressants appear to exert class-dependent modulation on disease activity in comorbid depression. Chronic stress mechanisms highlighted include hypothalamic-pituitary-adrenal axis activation, glucocorticoid resistance, increased intestinal permeability, inflammatory cytokine release, and genus- or species-level microbiome shifts. The abstract reports no specific study counts, sample sizes, or confidence intervals.
Why it matters
It organizes proposed neuroendocrine, immune, and microbial pathways connecting psychological distress to worse disease progression, helping contextualize targets for future mechanistic studies and clinical trials.
Limits
This is a narrative review rather than a systematic review or meta-analysis, with no documented search criteria, screening protocol, or risk-of-bias assessment. Specific study counts, sample sizes, and detailed quantitative effect estimates are omitted from the abstract, and causal directionality remains unproven.
Cited by
- context Acute cortisol and stress spikes damage the gut microbiome in a manner comparable to a dose of antibiotics.