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Gastrointestinal Motility and Disorders · Journal article
Journal of Clinical Gastroenterology · July 13, 2026
Reinforces what was already believed, rather than introducing something new.
This retrospective claims analysis of 6.46 million Medicare patients documents strong associations between specific neuropsychiatric diagnoses and gastrointestinal conditions, with adjusted odds ratios ranging from 1.33 to 11.77. The findings confirm known comorbidity patterns but do not establish causality, directionality, or temporal sequence due to the cross-sectional nature of the data extraction.
Retrospective cohort study using administrative claims data. Inpatient Medicare beneficiaries in 2018 with documented neuropsychiatric diagnoses.. n = 6,462,321. United States (Medicare claims database).
Dementia most strongly associated with dysphagia (OR 2.85, 95% CI 2.83–2.88) Amyotrophic lateral sclerosis showed strongest association with dysphagia (OR 11.77, 95% CI 11.19–12.39) Schizophrenia associated with functional GI disorders (OR 1.62, 95% CI 1.60–1.64), constipation (OR 1.67, 95% CI 1.65–1.69), and dyspepsia (OR 2.02, 95% CI 1.88–2.17)
Safety was not reported in the material analysed. Check the source before drawing any conclusion about harm.
Clinicians managing patients with neuropsychiatric diseases should maintain heightened vigilance for concurrent gastrointestinal symptoms and diagnoses, particularly dysphagia in dementia and ALS, and constipation in Parkinson disease and schizophrenia. However, this observational finding does not prove causality or guide treatment; prospective studies are needed to clarify mechanisms and interventions.
Large administrative database study confirming known associations between neuropsychiatric and gastrointestinal diagnoses with adjusted odds ratios and confidence intervals, but observational design limits causal inference.
As stated by the source record.
Quoted from the source exactly as published.
Clinicians managing patients with neuropsychiatric diseases should maintain heightened vigilance for concurrent gastrointestinal symptoms and diagnoses, particularly dysphagia in dementia and ALS, and constipation in Parkinson disease and schizophrenia. However, this observational finding does not prove causality or guide treatment; prospective studies are needed to clarify mechanisms and interventions.
Graded across the dimensions that decide whether you should act, each from what the source actually supports. There is no single score, and where a dimension was not assessed it says so.
BACKGROUND AND AIMS: Many patients with psychiatric and neurological diseases suffer from gastrointestinal symptoms. Our study aimed to analyze the frequency of gastrointestinal disease in patients with underlying neuropsychiatric diagnoses. METHODS: The study utilized the 2018 Inpatient Standard Analytic File of the Centers for Medicare and Medicaid Services (CMS), which contains the electronic health records of 6,462,321 unique patients. The concurrence of 2 diagnoses was assessed by calculating odds ratios (OR) with their 95% CIs, adjusted for the confounding influences of demographic characteristics (age, sex, ethnicity). RESULTS: Dementia was most strongly associated with dysphagia (2.85, 2.83 to 2.88). Schizophrenia was associated with functional GI disorders (1.62, 1.60 to 1.64), constipation (1.67, 1.65 to 1.69), and dyspepsia (2.02, 1.88 to 2.17). Bipolar disorder was most significantly associated with irritable bowel syndrome (1.83, 1.79 to 1.87) and dyspepsia (1.88, 1.77 to 2.01). Depression was significantly associated with all types of upper and lower GI symptoms with significant ORs ranging from 1.33 to 2.14. Amyotrophic lateral sclerosis was strongly associated with complaints of functional GI disorder (2.32, 2.18 to 2.46), constipation (2.37, 2.23 to 2.51), dysphagia (11.77, 11.19 to 12.39), flatulence and bloating (2.75, 2.14 to 3.54). Parkinson disease was mostly associated with constipation (1.79, 1.77 to 1.82) and dysphagia (2.96, 2.92 to 3.00). In Alzheimer disease, only symptoms of dysphagia (2.15, 2.12 to 2.17) stood out. Multiple sclerosis was associated with most GI diagnoses (OR ranging from 1.32 to 2.06), except for abdominal pain and reflux symptoms. CONCLUSIONS: Concurrence of gastrointestinal and neuropsychiatric diagnoses is common. Caring for patients with neuropsychiatric diseases, physicians need to be aware of and proactively search for the presence of concurrent gastrointestinal disease.
Taken from the source record, never inferred. Follow any of these and new work involving them reaches your briefing.