Patients on Home Parenteral Nutrition Show Geriatric Syndromes Decades Early
In a small study, all adults with chronic intestinal failure on home parenteral nutrition had five or more geriatric syndromes before old age.
Summary
Chronic intestinal failure (CIF) leaves people dependent on parenteral nutrition, and researchers wondered whether it might also speed up biological aging. Mexican investigators assessed 14 adults aged roughly 40–70 on home parenteral nutrition using a comprehensive geriatric assessment. Every participant had at least five geriatric syndromes, and more than half had ten or more. Polypharmacy affected 93%, about 93% were classed as frail on the Clinical Frailty Scale, and 93% scored abnormally on a cognitive screening test. The median PhenoAge was 67.5 years versus a mean chronological age of 58.3, suggesting premature metabolic aging. The findings are intriguing but come from a very small, uncontrolled, single-center sample. They show a high burden of age-related conditions, not proof that CIF causes accelerated aging.
Detailed Summary
Geriatric syndromes such as frailty, cognitive decline, polypharmacy and functional dependency usually appear in people over 65. Several hallmarks of aging have been implicated in chronic intestinal failure (CIF), a condition in which the gut cannot absorb enough nutrients and patients rely on parenteral nutrition. This raised the question of whether CIF behaves like a model of accelerated aging. Until now, no study had checked whether CIF patients on ambulatory parenteral nutrition develop geriatric syndromes before 65.
This Mexican single-center study consecutively enrolled 14 adults on a home parenteral nutrition program between September 2024 and January 2025. Mean age was 58.3 ± 13 years and 64% were women. Causes of CIF included short bowel syndrome, systemic sclerosis, fistula, dysmotility, obstruction and familial adenomatous polyposis. All participants underwent a comprehensive geriatric assessment, and phenotypic age (PhenoAge) was compared with chronological age.
All participants had at least five geriatric syndromes, and 57% had ten or more. Polypharmacy affected 93% (mean 9.3 medications). Some 64% were dependent in at least one basic daily activity and 93% could not perform at least one instrumental activity. Frailty was likely in 79% by the FRAIL questionnaire and present in 93% by the Clinical Frailty Scale. Probable sarcopenia was found in 43%, and the Timed Up and Go test placed 50% at high fall risk. Depression was likely in 57%, and 93% had abnormal Montreal Cognitive Assessment scores. Median PhenoAge was 67.5 years, higher than mean chronological age.
The authors propose that CIF combines metabolic, inflammatory, epigenetic and social stressors that may drive premature aging. If so, routine geriatric screening could be warranted for middle-aged CIF patients.
Caveats are substantial. The sample is tiny, there is no control group, and the design is cross-sectional, so causation cannot be inferred. Disease burden, medications and the underlying conditions may themselves explain the findings. Results need validation in larger, controlled studies.
Key Findings
- All 14 patients with chronic intestinal failure had at least five geriatric syndromes; 57.1% had ten or more.
- Median PhenoAge was 67.5 years versus mean chronological age of 58.3, suggesting premature metabolic aging.
- Polypharmacy affected 92.9% of patients, averaging 9.3 daily medications.
- Frailty was identified in 92.9% by Clinical Frailty Scale and 78.6% by FRAIL questionnaire.
- 92.9% had abnormal cognitive screening and 57.1% had likely depression, despite most being under 65.
Methodology
Cross-sectional, single-center study using non-probabilistic consecutive sampling of 14 adults aged 40–70 on ambulatory home parenteral nutrition (Sept 2024–Jan 2025). Participants received a comprehensive geriatric assessment covering multimorbidity, frailty, cognition, mood, mobility, falls, polypharmacy and daily function. Chronological age was compared with PhenoAge.
Study Limitations
With only 14 participants, no control group and a cross-sectional design, the study cannot show that CIF causes accelerated aging, and results may not generalize. Underlying diseases (e.g., systemic sclerosis), medications and nutritional status are strong confounders. The PhenoAge comparison contrasts a median with a mean, and PhenoAge is derived from blood biomarkers, so it is a weaker measure than true epigenetic clocks.
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