Journal
NATURE REVIEWS GASTROENTEROLOGY & HEPATOLOGY
Volume 19, Issue 11, Pages 717-726Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41575-022-00634-6
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Funding
- Danish National Research Foundation [DNRF148]
- Lundbeck Foundation [R313-2019-857]
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This review summarizes the co-occurrence of inflammatory bowel disease (IBD) with depression and anxiety, as well as the temporal relationship between these diseases. The review also explores the impact of psychological stress on the onset and course of IBD, and discusses the potential mechanisms underlying the co-occurrence of IBD with depression and anxiety. Additionally, the review examines the effects of treatment for depression and anxiety on the risk and course of IBD.
Inflammatory bowel disease (IBD), which includes Crohn's disease and ulcerative colitis, is a chronic, relapsing immune-mediated disease with a varying and sometimes severe disease course. IBD is often diagnosed in early adulthood and can lead to a substantial decline in quality of life. It has been suggested that patients with IBD are at increased risk of depression and anxiety, but it is still unclear to what extent these diseases co-occur and in what sequence they arise. This Review summarizes the literature on the degree of co-occurrence of IBD with depression and anxiety and the temporal relationship between these diseases. We also discuss the effect of psychological stress on the onset and course of IBD. In addition, we outline the possible mechanisms underlying the co-occurrence of IBD and depression and anxiety, which include changes in brain signalling and morphology, increases in peripheral and intracerebral pro-inflammatory cytokines, impairment of the nitric oxide pathway, changes in vagal nerve signalling, gut dysbiosis and genetics. Finally, we examine the possible effects of treatment of depression and anxiety on the risk and course of IBD, the influence of psychological interventions on IBD, and the effects of IBD treatment on psychiatric comorbidity. In this Review, Jess and colleagues describe the prevalence of depression and anxiety in patients with inflammatory bowel disease, the mechanisms underlying the bidirectional association between these diseases and the effect of treatment on their co-occurrence.
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