ArticleThe American journal of gastroenterology2025
Obesity Is Independently Associated With Increased Risk of Fecal Incontinence and Altered Rectal Sensitivity.
Article in The American journal of gastroenterology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Impact of Surgical Weight Loss Interventions on Urinary Incontinence in Obese Women: Systematic Review and Meta-Analysis.International urogynecology journal · 2026Review
- Associations between five anthropometric indices and fecal incontinence: A cross-sectional study based on the 2005 to 2010 NHANES data.Medicine · 2026Article
- Change in faecal incontinence pattern after gastric bypass surgery: related to change in anal sphincter thickness?International journal of colorectal disease · 2026Article
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Authors and funding
5 authors.
Funding
Abstract
introductionHindgut symptoms are poorly understood complications of obesity. The impact of obesity on fecal incontinence (FI) and anorectal physiology remains unclear, with inconsistent results in prior studies. We aimed to evaluate the relationship between obesity and FI, and the physiological changes in anorectal function.
methodsThis was a retrospective cohort study of consecutive adults who underwent high-resolution anorectal manometry (HRAM) at a tertiary center for anorectal symptoms. Demographics, clinical history, surgical/obstetric history, medications, and HRAM findings were reviewed. Patients were classified as nonobese (body mass index [BMI] <25 kg/m 2 ), overweight (BMI 25-29.9 kg/m 2 ), class I obesity (30-34.9 kg/m 2 ), and class II + III obesity (>35 kg/m 2 ). The Fisher exact/Student t test for univariate analyses and logistic/general linear regression for multivariable analyses were performed.
resultsA total of 552 adults were included. The mean BMI was higher among patients with FI (27.5 vs 25.9 kg/m 2 , P = 0.013). Compared with the nonobese group, FI was more prevalent in class II + III obesity (31.7% vs 13.2%, P = 0.0024), but not class I obesity or overweight groups. On multivariable analysis controlling for potential confounders, class II + III obesity (adjusted odds ratio 2.89, 95% confidence interval 1.28-6.50, P = 0.02) remained an independent risk factor of FI. Among patients with FI, both BMI (β-coefficient 1.09, P = 0.016) and class II + III obesity (β-coefficient 18.9, P = 0.027) independently predicted increased first rectal sensation volume on HRAM on multivariable regression. DISCUSSION: Classes II + III obesity was an independent risk factor of FI. Among patients with FI, increasing BMI and class II + III obesity were associated with altered rectal sensitivity. Anorectal function testing should be considered to help guide management of FI among patients with obesity.
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