Definition and research guide
This page combines a MeSH definition, publication statistics and selected research abstracts. It is a starting point for reading the literature, not a medical textbook or a systematic evidence review.
Content available: 4 complete abstracts (834 words), 10 references. Full article text is not stored or reproduced here; follow the PMID, DOI or PMC links to read the original sources and their access terms.
Definition
Nutritional support given via the alimentary canal or any route connected to the gastrointestinal system (i.e., the enteral route). This includes oral feeding, sip feeding, and tube feeding using nasogastric, gastrostomy, and jejunostomy tubes.
Definition: NLM Medical Subject Headings (MeSH) scope note (Public domain (U.S. National Library of Medicine); attribution requested). View the MeSH record.
Also known as: Nutrition, Enteral; Tube Feeding; Feeding, Tube; Enteral Feeding; Feeding, Enteral; Gastric Feeding Tubes; Feeding Tube, Gastric; Feeding Tubes, Gastric.
Where it fits in the MeSH classification
- Broader topics
- Feeding Methods; Nutritional Support
- See also
- Food, Formulated; Gastrostomy; Intubation, Gastrointestinal
Research landscape
PubMed indexes 24,022 records tagged with the MeSH heading “Enteral Nutrition” (counts retrieved 2026-11-04). 4,310 of them (17.9%) were published from 2020 onward, and the busiest period so far is through 1999 with 7,932 records.
Reviews account for 4,714 records (19.6%) and meta-analyses for 525. Randomized controlled trials number 2,063 (8.6%) as a share of all records on the topic. Randomized trials make up a comparatively large share of this literature, which means many treatment questions have been tested directly.
Show the data
| Period | Records |
|---|---|
| through 1999 | 7,932 |
| 2000-2009 | 5,217 |
| 2010-2019 | 6,563 |
| 2020 onward | 4,310 |
Publication-type chart data
| Type | Records | Share |
|---|---|---|
| Reviews | 4,714 | 19.6% |
| Meta-analyses | 525 | 2.2% |
| Randomized controlled trials | 2,063 | 8.6% |
Method: PubMed query "Enteral Nutrition"[MeSH Terms] with publication-type and date filters, retrieved 2026-11-04.
Reading the evidence in public health and nutrition
Population and nutrition studies mostly observe what people eat, breathe or are exposed to and then look for links with health, which shows association and not proof of cause. Self-reported diet is imprecise, people who eat or live differently also differ in other ways, and effects measured across a population may not apply to one person. Check the study design, how exposure was measured, what else was accounted for and the size of the effect, not only whether it was statistically significant.
Evidence from open-access studies
These open-access studies come from PubMed’s best-match results for this heading (papers whose main topic it is), ranked here by citation count, with one recent addition. Each abstract is reproduced in full under its recorded open licence so that you can read the authors’ own words. They illustrate the literature; they are not a systematic summary of it. Citation counts measure attention, not reliability or clinical benefit.
| Study / authors | Year | Source label / design | Europe PMC citations | Licence / source |
|---|---|---|---|---|
| Comparison of Early Enteral Nutrition Versus Early Parenteral Nutrition in Critically Ill Patients: A Systematic Review and Meta-Analysis | 2024 | Meta-analysis Design not recorded in structured metadata | 25 | cc by PMID 39796444 · DOI · PMC11723109 |
| Dietary Interventions and Oral Nutritional Supplementation in Inflammatory Bowel Disease: Current Evidence and Future Directions | 2025 | Review article Design not recorded in structured metadata | 20 | cc by PMID 40507145 · DOI · PMC12157630 |
| Gastrointestinal function and nutritional interventions in septic shock | 2025 | Review article Design not recorded in structured metadata | 14 | cc by PMID 40637059 · DOI · PMC12419005 |
| Guidelines for nutrition in adults with head and neck cancer: The American Society for Parenteral and Enteral Nutrition | 2026 | Research article Design not recorded in structured metadata | 6 | cc by PMID 41773753 · DOI · PMC13047306 |
Comparison of Early Enteral Nutrition Versus Early Parenteral Nutrition in Critically Ill Patients: A Systematic Review and Meta-Analysis [1]
Abstract reading summary — source excerpts
- Opening excerpt
- BackgroundNutritional support is crucial in critically ill patients to enhance recovery, reduce infections, and improve outcomes.
- Closing excerpt
- ConclusionsThese findings support prioritizing EEN in critically ill patients with functional gastrointestinal systems to improve infection control and recovery while emphasizing the importance of careful monitoring to mitigate gastrointestinal complications.
- Interpretation limits
- Verbatim excerpts from the authors’ abstract; the closing excerpt may describe a finding, limitation or recommendation. Design, population, effect size and uncertainty have not been independently extracted or appraised. Read the complete abstract and linked paper before interpreting the findings.
Read complete abstract (186 words)
BackgroundNutritional support is crucial in critically ill patients to enhance recovery, reduce infections, and improve outcomes. This meta-analysis compared early enteral nutrition (EEN) and early parenteral nutrition (EPN) to evaluate their efficacy in adult critically ill patients.MethodsA systematic review of 14 studies involving 7618 patients was conducted, including randomized controlled trials, prospective cohorts, and retrospective analyses. The primary outcomes were mortality and infectious complications, while secondary outcomes included intensive care unit length of stay (ICU-LOS), hospital length of stay (H-LOS), mechanical ventilation days, and gastrointestinal (GI) complications.ResultsThe results showed no significant difference in mortality between EEN and EPN (OR 1.03, 95% CI 0.93-1.14). EEN reduced bloodstream infections (OR 0.73, 95% CI 0.57-0.93), ICU-LOS (MD -0.18 days, 95% CI -0.33 to -0.04), and H-LOS (MD -1.15 days, 95% CI -1.38 to -0.93). However, EEN was associated with higher GI complications, such as vomiting and diarrhea (OR 2.25, 95% CI 1.97-2.58), while mechanical ventilation days showed no significant difference.ConclusionsThese findings support prioritizing EEN in critically ill patients with functional gastrointestinal systems to improve infection control and recovery while emphasizing the importance of careful monitoring to mitigate gastrointestinal complications.
Abstract reproduced from the open-access article under the recorded cc by licence; © the authors. PMID 39796444 · DOI · PMC11723109
Dietary Interventions and Oral Nutritional Supplementation in Inflammatory Bowel Disease: Current Evidence and Future Directions [2]
Abstract reading summary — source excerpts
- Opening excerpt
- BackgroundNutritional management has become an integral part of Inflammatory Bowel Disease (IBD) care, with growing evidence supporting specific dietary interventions alongside pharmacologic therapy.
- Closing excerpt
- Future research should prioritize standardized, well-powered clinical trials and personalized nutritional approaches to better define their role within integrated care pathways.
- Interpretation limits
- Verbatim excerpts from the authors’ abstract; the closing excerpt may describe a finding, limitation or recommendation. Design, population, effect size and uncertainty have not been independently extracted or appraised. Read the complete abstract and linked paper before interpreting the findings.
Read complete abstract (226 words)
BackgroundNutritional management has become an integral part of Inflammatory Bowel Disease (IBD) care, with growing evidence supporting specific dietary interventions alongside pharmacologic therapy. However, clinical guidance remains fragmented due to heterogeneous study designs and variable endpoints.ObjectivesThis review critically examines the current evidence on dietary strategies and oral nutritional supplementation (ONS) in both Crohn's Disease (CD) and Ulcerative Colitis (UC), highlighting their clinical applications, mechanisms of action, and limitations.MethodsA comprehensive literature search was conducted using PubMed, Scopus, and Web of Science databases, analyzing studies on various dietary approaches and ONS in IBD.ResultsExclusive Enteral Nutrition (EEN) is a first-line therapy in pediatric CD, while partial enteral nutrition (PEN) and the Crohn's Disease Exclusion Diet (CDED) show promising efficacy and better adherence in both children and adults. Whole-food-based interventions, including the Mediterranean Diet, Specific Carbohydrate Diet, plant-based diets, and emerging strategies such as CD-TREAT and the Tasty & Healthy diet, have demonstrated varying levels of benefit in disease maintenance and symptom control. Targeted exclusion diets-such as low-FODMAP, low-emulsifier, and low-sulfur diets-may relieve functional symptoms and influence inflammatory activity, although evidence remains preliminary. ONS plays a pivotal role in addressing malnutrition and improving outcomes in perioperative and hospitalized patients.ConclusionsDietary interventions and ONS represent valuable therapeutic tools in IBD management. Future research should prioritize standardized, well-powered clinical trials and personalized nutritional approaches to better define their role within integrated care pathways.
Abstract reproduced from the open-access article under the recorded cc by licence; © the authors. PMID 40507145 · DOI · PMC12157630
Gastrointestinal function and nutritional interventions in septic shock [3]
Abstract reading summary — source excerpts
- Opening excerpt
- Purpose of reviewGastrointestinal (GI) dysfunction significantly impacts patient outcomes in septic shock, complicating clinical management due to its central role in systemic inflammation, barrier integrity, and nutrient assimilation.
- Closing excerpt
- Future research should validate monitoring tools, refine individual patient assessment, and evaluate novel therapeutic interventions to improve patient-centered outcomes in septic shock.
- Interpretation limits
- Verbatim excerpts from the authors’ abstract; the closing excerpt may describe a finding, limitation or recommendation. Design, population, effect size and uncertainty have not been independently extracted or appraised. Read the complete abstract and linked paper before interpreting the findings.
Read complete abstract (172 words)
Purpose of reviewGastrointestinal (GI) dysfunction significantly impacts patient outcomes in septic shock, complicating clinical management due to its central role in systemic inflammation, barrier integrity, and nutrient assimilation. This review summarizes the evolving understanding of GI dysfunction during septic shock and provides an updated framework for clinical management.Recent findingsNew insights from recent studies focus on individualized nutritional strategies over standardized calorie-driven targets, highlighting risks associated with aggressive enteral nutrition, such as exacerbation of gut ischemia and bowel distension, and microbial dysbiosis. Maintaining splanchnic perfusion, monitoring GI dysfunction with standardized tools, and advancing nutritional support progressively based on patient-specific gastrointestinal tolerance are current strategies. Novel adjunctive therapies targeting gut permeability and microbiome restoration have been proposed, yet robust clinical data remain limited.SummaryClinical management should prioritize hemodynamic stabilization and organ support rather than immediately targeting any nutritional goals. Monitoring GI function systematically and tailoring nutritional interventions may prevent complications and support recovery. Future research should validate monitoring tools, refine individual patient assessment, and evaluate novel therapeutic interventions to improve patient-centered outcomes in septic shock.
Abstract reproduced from the open-access article under the recorded cc by licence; © the authors. PMID 40637059 · DOI · PMC12419005
Guidelines for nutrition in adults with head and neck cancer: The American Society for Parenteral and Enteral Nutrition [4]
Abstract reading summary — source excerpts
- Opening excerpt
- BackgroundHead and neck cancer represents the seventh most common cancer diagnosis globally.
- Closing excerpt
- This paper was approved by the ASPEN Board of Directors.
- Interpretation limits
- Verbatim excerpts from the authors’ abstract; the closing excerpt may describe a finding, limitation or recommendation. Design, population, effect size and uncertainty have not been independently extracted or appraised. Read the complete abstract and linked paper before interpreting the findings.
Read complete abstract (250 words)
BackgroundHead and neck cancer represents the seventh most common cancer diagnosis globally. Maintaining sufficient nutrition is important for preventing malnutrition (undernutrition) and muscle wasting, which contribute to worse outcomes, although many patients are unable to maintain adequate oral intake throughout treatment. This guideline provides practice guidance on nutrition care for patients with head and neck cancer.MethodsAn interdisciplinary team developed key questions and scanned results from a systematic search of the PubMed, EMBASE, CINAHL, and Cochrane Central databases back to 2001. Recommendations were created for key questions concerning timing and duration of nutrition support (early vs delayed enteral nutrition [EN], postoperative feeding, and perioperative dietitian intervention), frequency of dietitian and speech pathology consultations, nutrition screening and assessment, macronutrient requirements, enteral access devices, adjunctive strategies (appetite stimulants and continuation of oral intake alongside EN), specialized nutrients (arginine, glutamine, ω-3, and immunonutrition), and interdisciplinary care.ResultsNinety-two studies were included. Recommendations were made supporting early initiation of EN when oral intake is inadequate, nutrition within 24 h after surgery, weekly consultation with a dietitian during radiotherapy, malnutrition screening and assessment with validated tools, interdisciplinary models of care, dietitian involvement before and after surgery, and when to consider use of specialized nutrients. Recommendations are also provided for protein intake (1.2-1.5 g/kg/day) and energy intake (≥30 kcal/kg/day).ConclusionThis guideline provides guidance for the nutrition care of patients with head and neck cancer, identifies research gaps, and calls for standardized outcome reporting to further the state of the evidence. This paper was approved by the ASPEN Board of Directors.
Abstract reproduced from the open-access article under the recorded cc by licence; © the authors. PMID 41773753 · DOI · PMC13047306
Key reviews and meta-analyses
The most cited review-type papers among PubMed’s best-match results for this heading, listed with bibliographic details only. Follow the links for the full text and access terms.
- Research article Early enteral nutrition in critically ill patients: ESICM clinical practice guidelines [5]
- Research article Early enteral nutrition in acutely ill patients: a systematic review [6]
- Research article Early enteral feeding versus "nil by mouth" after gastrointestinal surgery: systematic review and meta-analysis of controlled trials [7]
- Research article Enteral compared with parenteral nutrition: a meta-analysis [8]
- Research article A Systematic Review and Meta-Analysis of Human Milk Feeding and Morbidity in Very Low Birth Weight Infants [9]
- Research article Systematic review and meta-analysis of the effects of high protein oral nutritional supplements [10]
Full-text reviews on EvidenceLib
Open-access review articles about this topic, reproduced in full with authors, licence and references.
The efficacy and safety of prokinetics in critically ill adults receiving gastric feeding tubes: A systematic review and meta-analysis
Rong Peng, Hailong Li, Lijun Yang et al. · PLoS ONE 2021 · CC BY 4.0
References
- Baik SM, Kim M, Lee JG. Comparison of Early Enteral Nutrition Versus Early Parenteral Nutrition in Critically Ill Patients: A Systematic Review and Meta-Analysis. . 2024. PMID 39796444 · DOI · PMC11723109
- Barberio B, Bertin L, Facchin S, Bonazzi E, Cusano S, Romanelli G, et al.. Dietary Interventions and Oral Nutritional Supplementation in Inflammatory Bowel Disease: Current Evidence and Future Directions. . 2025. PMID 40507145 · DOI · PMC12157630
- Bachmann KF, Cotoia A, Reintam Blaser A. Gastrointestinal function and nutritional interventions in septic shock. . 2025. PMID 40637059 · DOI · PMC12419005
- Kiss N, Findlay M, Frowen J, Lewis WE, Mills J, Singh AK, et al.. Guidelines for nutrition in adults with head and neck cancer: The American Society for Parenteral and Enteral Nutrition. . 2026. PMID 41773753 · DOI · PMC13047306
- Reintam Blaser A, Starkopf J, Alhazzani W, Berger MM, Casaer MP, Deane AM, et al.. Early enteral nutrition in critically ill patients: ESICM clinical practice guidelines. Intensive Care Med. 2017. PMID 28168570 · DOI · PMC5323492
- Marik PE, Zaloga GP. Early enteral nutrition in acutely ill patients: a systematic review. Crit Care Med. 2001. PMID 11801821 · DOI
- Lewis SJ, Egger M, Sylvester PA, Thomas S. Early enteral feeding versus "nil by mouth" after gastrointestinal surgery: systematic review and meta-analysis of controlled trials. BMJ. 2001. PMID 11588077 · DOI · PMC57351
- Braunschweig CL, Levy P, Sheean PM, Wang X. Enteral compared with parenteral nutrition: a meta-analysis. Am J Clin Nutr. 2001. PMID 11566654 · DOI
- Miller J, Tonkin E, Damarell RA, McPhee AJ, Suganuma M, Suganuma H, et al.. A Systematic Review and Meta-Analysis of Human Milk Feeding and Morbidity in Very Low Birth Weight Infants. Nutrients. 2018. PMID 29857555 · DOI · PMC6024377
- Cawood AL, Elia M, Stratton RJ. Systematic review and meta-analysis of the effects of high protein oral nutritional supplements. Ageing Res Rev. 2012. PMID 22212388 · DOI
About this article
- Sources
- NLM Medical Subject Headings (definition, synonyms); NCBI PubMed (counts, identifiers); Europe PMC (open-access abstracts and citation counts).
- Verification
- Every reference was resolved against PubMed on 2026-11-04; title, year and DOI matched.
- Review state
- automated source verified; no human expert review has been recorded yet.
- Version
- 1, last updated 2026-11-04.
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Evidence strength
EvidenceHelix's computed view of the study designs behind this topic: how common meta-analyses, randomized trials and reviews are, how recent the literature is, and a plain-language reading. It describes the design mix of the literature. It is not a quality appraisal of any study, and it is not medical advice.