Inflammatory bowel disease and bipolar disorder: A population-based cross-sectional study

Area of Science:

• Gastroenterology and Psychiatry
• Public Health Research
• Epidemiology

Background:

• Emerging evidence suggests shared biological pathways between inflammatory bowel disease (IBD) and bipolar disorder (BD).
• Existing research on the IBD-BD association is limited and presents conflicting findings, particularly in non-Western populations.
• This study addresses the need for further investigation into the potential link between IBD and BD.

Purpose of the Study:

• To investigate the association between inflammatory bowel disease (IBD) and bipolar disorder (BD).
• To evaluate the prevalence of BD in patients diagnosed with IBD using a nationwide database.
• To provide epidemiological data on the comorbidity of IBD and BD in Taiwan.

Main Methods:

• A cross-sectional study utilizing the National Health Insurance Research Database in Taiwan.
• Inclusion of 3590 patients with IBD and 14,360 propensity score-matched controls without IBD.
• Conditional logistic regression analysis to assess the association between BD and IBD.

Main Results:

• Bipolar disorder (BD) was diagnosed in 0.72% of IBD patients versus 0.34% of controls.
• Patients with IBD had a significantly higher adjusted odds ratio (OR) of 2.10 (95% CI: 1.30–3.38) for BD.
• Ulcerative colitis patients showed a similar increased adjusted OR of 2.23 (95% CI: 1.31–3.82) for BD.

Conclusions:

• Patients diagnosed with inflammatory bowel disease (IBD) exhibit a greater likelihood of having bipolar disorder (BD).
• The findings suggest a significant association between IBD and an increased risk of BD.
• Further research is warranted to elucidate the causal relationship and underlying mechanisms.