The aged gut in inflammatory bowel diseases

Area of Science:

• Gastroenterology
• Gerontology
• Microbiology

Background:

• Aging leads to anatomical and functional changes affecting nutrition and increasing gastrointestinal tract susceptibility.
• Proton pump inhibitors and NSAIDs in the elderly compromise gastric barriers, facilitating microbial entry.
• Elderly gut microbiota is less stable, predisposing to dysbiosis and increased infection risk.

Purpose of the Study:

• To highlight the challenges of diagnosing and managing inflammatory bowel diseases (IBD) in the elderly.
• To emphasize the importance of differentiating late-onset IBD from other senescent gut pathologies.
• To discuss the clinical implications and outcomes of IBD in older populations.

Main Methods:

• Review of age-related changes in digestive function and gut microbiota.
• Analysis of factors contributing to dysbiosis and infection risk in senescence.
• Discussion of diagnostic considerations for elderly-onset IBD, including differential diagnoses.
• Evaluation of clinical course, comorbidities, and outcomes in elderly IBD patients.

Main Results:

• Gut dysbiosis is more common in the elderly, increasing susceptibility to infections like Clostridium difficile.
• Late-onset IBD requires careful evaluation to distinguish it from other colitis types (diverticular, drug-induced, ischemic, microscopic).
• Elderly IBD patients often present with comorbidities, complicating treatment and increasing morbidity and mortality risks.

Conclusions:

• Diagnosing IBD in the elderly is challenging due to overlapping symptoms with other senescent gut conditions.
• Despite potentially milder disease courses, elderly-onset IBD is associated with increased hospitalization and mortality, primarily due to comorbidities.
• A thorough macroscopic and histologic evaluation is mandatory for accurate diagnosis and management of IBD in older adults.