Nutrition and Hydration at the End of Life in Intensive Care and General End-of-Life Care Settings: Balancing Clinical Evidence, Patient-Centered Care, and Ethical and Legal Principles—A Narrative Review
Abstract
1. Introduction
2. Materials and Methods
3. Context and Definitions of Nutrition for End-of-Life Patients
4. Pathophysiology of Reduced Food Intake at the End of Life
4.1. Peripheral Mechanisms of Anorexia
4.2. Genetic Determinants of Anorexia–Cachexia
4.3. Central Mechanisms of Anorexia
5. Clinical Implications and Considerations
5.1. Benefits of Nutritional Support
5.2. Limited Efficacy of Nutritional Support
5.3. Arguments for and Against CANH
6. Ethical Aspects
- (1)
- The principle of beneficence calls for a careful evaluation of the potential benefits of CANH [121].
- (2)
- The principle of non-maleficence (“no harm”) requires physicians to carefully weigh the benefits and risks of nutritional intervention [121].
- (3)
- The principle of respect for autonomy mandates physicians to provide patients with clear information about the purpose, chances, and risks of the treatment, and a fully informed decision is then made [121].
- (4)
- The principle of justice relates to the fair distribution of resources and treatments among patients; people with similar medical needs receive the same interventions [121].
6.1. Perception of Medical Staff Regarding EN and PN at the End of Life
6.2. Informing the Family and the Patient
| Population/Setting | Typical Clinical Decision | Effect on Survival | Effect on Comfort/QoL | Effect on Aspiration/Complications | Certainty of Evidence | Key References |
|---|---|---|---|---|---|---|
| Advanced dementia with swallowing failure | Tube feeding vs. careful hand feeding | No improvement in survival (RR 1.03; 95% CI 0.92–1.15) | No survival benefit; lower comfort | Risk of aspiration pneumonia unchanged or higher | High | [8] |
| Terminal cancer (cachexia, anorexia) | Parenteral or enteral nutrition vs. standard palliative care | No significant survival benefit (median difference < 2 weeks) | No consistent improvement in QoL; increased symptom burden | Higher complication rate (infection, fluid overload) | Moderate | [131] |
| ICU patient with poor prognosis (multi-organ failure) | Continue vs. withdraw CANH | Minimal impact on mortality in refractory cases | Possible increase in discomfort; sedation often required | High metabolic and infection risks | Moderate | [139,140] |
| Persistent vegetative state/minimally conscious state | Continue vs. withdraw CANH | No survival benefit; may prolong biological function without | No improvement; burdens families emotionally | Medical complications are frequent (infection, thrombosis) | Moderate–Low | [141,142] |
| Advanced neurodegenerative diseases (ALS, Parkinson’s) | PEG feeding vs. comfort feeding/oral support | May transiently maintain weight; no long-term survival gain | QoL may improve temporarily if aspiration is reduced | Complications related to PEG are frequent | Moderate | [143] |
7. Legal Aspects
8. Spiritual Food and the Human Dimension at the End of Life
9. Limitations of the Study
10. Final Recommendations for Clinicians
- Assess prognosis, comorbidities, and the patient’s wishes or values before starting or continuing CANH.
- Maintain an open, empathetic dialog with patients and their families to align expectations and care goals.
- Respect the patient’s autonomy by honoring their choices, even when they differ from the family’s preferences.
- Analyze risks, burdens, and benefits by considering complications (such as aspiration, infections, and discomfort) versus potential comfort or symbolic value.
- Consider all medical, psychological, social, and spiritual needs when making end-of-life decisions.
- When uncertainty occurs, a short-term trial of CANH with defined review criteria may be appropriate, provided ongoing communication with families and the multidisciplinary team persists.
- Follow institutional protocols and national laws, documenting discussions and review points.
11. Conclusions
Supplementary Materials
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
Abbreviations
| ACS | Anorexia–cachexia syndrome |
| ANH | Assisted nutrition and hydration |
| ARC | Arcuate nucleus |
| ASPEN | American Society for Parenteral and Enteral Nutrition |
| α-MSH | Alpha-melanocyte-stimulating hormone |
| BBB | Blood–brain barrier |
| CANH | Clinically assisted nutrition and hydration |
| CNS | Central nervous system |
| COX | Cyclooxygenase |
| CRP | C-reactive protein |
| CSF | Cerebrospinal fluid |
| EAPC | European Association for Palliative Care |
| EN | Enteral nutrition |
| ESKD | End-stage kidney disease |
| ESPEN | European Society for Clinical Nutrition and Metabolism |
| GH/IGF-1 | Growth hormone/Insulin-like growth factor-1 axis |
| 5-HT2C | Serotonin receptor subtype 2C |
| IFN-γ | Interferon-gamma |
| IL-1 | Interleukin-1 |
| IL-6 | Interleukin-6 |
| LACDP | Leadership Alliance for the Care of Dying People |
| LMF | Lipid-mobilizing factor |
| MC4R | Melanocortin-4 receptor |
| NC | Nutritional counseling |
| NGT | Nasogastric tube |
| NPY | Neuropeptide Y |
| OCTGIR | One Chance to Get It Right |
| OIC | Opioid-induced constipation |
| ONS | Oral nutritional supplements |
| PEG | Percutaneous endoscopic gastrostomy |
| PEI | Pancreatic exocrine insufficiency |
| PGE2 | Prostaglandin E2 |
| PN | Parenteral nutrition |
| POMC | Proopiomelanocortin |
| QoL | Quality of life |
| SNPs | Single-nucleotide polymorphisms |
| TF | Tube feeding |
| TNF-α | Tumor Necrosis Factor-alpha |
| TP53, MYC, HIF1A | Tumor driver genes (oncogenes and transcription factors) |
| VMH | Ventromedial hypothalamic nucleus |
| VSED | Voluntary stopping of eating and drinking |
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| Nutrition of Patients at the End of Life | |
| Supporting arguments [117,118,119,120,121] | Alleviates hunger and thirst, reducing patient discomfort |
| Uphold the symbol of patient care, “never abandon” | |
| Limited support for the medical team and family during the grieving process | |
| Counterarguments [117,118,120,121,122,123] | Rarely enhances or extends the quality of life |
| Associated with higher risks (discomfort, aspiration, infections) | |
| Extends the dying process | |
| Contradicts the principles of comfort-focused palliative care | |
| Nutrition in comatose patients, those in a persistent vegetative state, and those in brain death | |
| Supporting arguments [117,118,120,121] | Maintains essential biological functions |
| Supports the family in accepting death | |
| Permits organ donation (in confirmed brain death) | |
| Counterarguments [120,121,124,125] | In brain death, the patient is considered both biologically and legally dead |
| In a vegetative state or deep coma, the likelihood of recovery is very low | |
| It causes ethical and legal confusion about the definition of death | |
| CANH in Patients with Advanced Dementia | |
| Supporting arguments [122,123,126,127] | Prevents complications like dehydration and pressure ulcers |
| It can be seen as an expression of concern for the patient | |
| Gives the family time to process the situation | |
| Counterarguments [10,16,120,127,128,129] | Does not significantly improve the quality of life |
| It may cause discomfort, agitation | |
| It is linked to a higher risk of aspiration and infection | |
| Artificially extends an irreversible process | |
| Patients who refuse CANH (do not want to live) | |
| Supporting arguments [119,120] | Moral obligation to “do everything possible” |
| Sustaining life might enable reconsideration of the patient’s decision | |
| Counterarguments [16,128] | Respect for patient autonomy must be upheld |
| If a capable patient refuses nutrition, their decision must be honored | |
| Administering CANH without the patient’s consent is unethical | |
| It causes unjustified psychological and physical suffering | |
| Type of Intervention | Indications | Expected Benefits | Potentially Harmful Effects | Clinical Scenarios |
|---|---|---|---|---|
| Hydration (oral, parenteral) | Thirst, symptoms of dehydration with prerenal azotemia, delirium from opioid toxicity, and other acute reversible conditions | Improvement in thirst and dehydration symptoms; enhancement of overall condition in carefully chosen groups | Edema, increased respiratory secretions, pulmonary congestion, and complications related to catheter placement | Dementia, advanced neuromuscular diseases, terminal cancers, and ICU patients with comfort-focused goals |
| Enteral nutrition (NGT/PEG) | Patients with intact gastrointestinal function for whom oral nutrition is no longer safe | May temporarily stabilize weight or slow weight loss; may help relieve hunger in some cases | Aspiration pneumonia, infections, discomfort from tube placement, and diarrhea | Neurological diseases (ALS), reversible dysphagia, and well-selected ICU cases |
| Parenteral nutrition | Severe gastrointestinal dysfunctions and obstructions; malabsorption syndromes | Potential symptom improvement in carefully chosen cases | Catheter infections, fluid overload, and metabolic complications | May be recommended for short periods in ICU with reversible potential; rarely considered appropriate in cases of advanced dementia or terminal cancer |
| Country/Guide | Primary Legal or Ethical Source (Year) | Core Recommendation/Legal Approach | Degree of Certainty | Clinical Takeaway | Additional Comments |
|---|---|---|---|---|---|
| France [149] | Claeys-Leonetti Law, Code de la Santé Publique (2016, updated May 2025) | Legalizes medical assistance in dying for incurable diseases; allows withdrawal of futile CANH under collegial medical decision. | Legislative certainty (in force) | CANH may be lawfully discontinued when deemed futile, respecting patient autonomy and prior wishes. | Allows the administration of a lethal substance at the patient’s request, or in the event of incapacity, by a medical commission |
| Netherlands and Belgium [150] | Termination of Life on Request and Assisted Suicide Act (The Netherlands, 2002); Belgian Euthanasia Law (2002, amended 2020) | Euthanasia and assisted suicide are allowed under strict conditions, including advanced dementia with advance directives. | Legislative certainty | Advance directives are binding; CANH withdrawal or non-initiation is ethically and legally permitted when aligned with prior wishes. | Advance directives must be respected. |
| United Kingdom [151] | Mental Capacity Act (2005); NICE NG31—Care of Dying Adults (2015, updated 2023) | Decisions based on “best interests”; CANH may be withdrawn if no longer beneficial; court review possible in complex cases. | Moderate certainty (jurisprudence) | Decision-making must follow capacity assessment and best-interest review; legal oversight ensures proportionality. | The multidisciplinary team decides, in complex cases, whether court involvement is necessary |
| Romania [152,153] | Law no. 46/2003 on Patients’ Rights; Code of Medical Deontology (Romanian College of Physicians, 2016) | Informed consent mandatory; no explicit CANH legislation; legal representative acts in cases of incapacity. | Low certainty (legislative gaps) | Ethical decisions guided by dignity and informed consent; absence of specific law may require institutional ethics input. | Decisions in the event of incapacity are made by the legal representative or relatives, with respect for the individual’s dignity. |
| EAPC—Palliative Care (2009) [11,131] | European Association for Palliative Care Guidelines (2009) | CANH not recommended in final days/weeks of life; sedation preferred in well-selected cases. | – | Ethical focus on comfort and proportionality rather than prolongation of life. | General Ethical Guidance |
| ESPEN—Nutrition in Cancer (2017) [136] | ESPEN Guidelines on Nutrition in Cancer (2017) | CANH not routinely indicated in terminal stages; considered if malnutrition is reversible and life expectancy >2–3 months. | Low | Individual assessment required; start only if benefit and comfort are expected. | Emphasis is placed on the individual assessment of each patient. |
| ESPEN—Practical Guidelines, Advanced Cancer (2021) [154] | ESPEN Practical Guidelines: Clinical Nutrition in Cancer (2021) | Parenteral nutrition only if prognosis >2 months and patient requests it; periodic reassessment advised. | Moderate | PN/EN indicated only for reversible situations or expected symptom relief; focus on QoL. | Care is focused on quality of life and autonomy |
| ASPEN—Guidelines (2016) [155] | ASPEN Clinical Guidelines for Nutrition Support in Adult Patients (2016) | PN or EN not recommended in terminally ill patients with no functional benefit. | Low | Nutrition should not be continued if it fails to improve survival, comfort, or function. | The emphasis is on the usefulness of the intervention |
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Stoian, M.; Stoian, A.; Bănescu, C.; Bandila, S.R.; Babă, D.-F.; Azamfirei, L. Nutrition and Hydration at the End of Life in Intensive Care and General End-of-Life Care Settings: Balancing Clinical Evidence, Patient-Centered Care, and Ethical and Legal Principles—A Narrative Review. Nutrients 2025, 17, 3705. https://doi.org/10.3390/nu17233705
Stoian M, Stoian A, Bănescu C, Bandila SR, Babă D-F, Azamfirei L. Nutrition and Hydration at the End of Life in Intensive Care and General End-of-Life Care Settings: Balancing Clinical Evidence, Patient-Centered Care, and Ethical and Legal Principles—A Narrative Review. Nutrients. 2025; 17(23):3705. https://doi.org/10.3390/nu17233705
Chicago/Turabian StyleStoian, Mircea, Adina Stoian, Claudia Bănescu, Sergio Rares Bandila, Dragoș-Florin Babă, and Leonard Azamfirei. 2025. "Nutrition and Hydration at the End of Life in Intensive Care and General End-of-Life Care Settings: Balancing Clinical Evidence, Patient-Centered Care, and Ethical and Legal Principles—A Narrative Review" Nutrients 17, no. 23: 3705. https://doi.org/10.3390/nu17233705
APA StyleStoian, M., Stoian, A., Bănescu, C., Bandila, S. R., Babă, D.-F., & Azamfirei, L. (2025). Nutrition and Hydration at the End of Life in Intensive Care and General End-of-Life Care Settings: Balancing Clinical Evidence, Patient-Centered Care, and Ethical and Legal Principles—A Narrative Review. Nutrients, 17(23), 3705. https://doi.org/10.3390/nu17233705

