Artificial nutrition and hydration is one of the most difficult medical decisions a seriously ill person — or their family — will ever face. These treatments deliver fluids and nutrients to the body through methods other than eating and drinking normally. For many Canadians dealing with advanced illness, understanding what these treatments actually do (and don’t do) can make an enormous difference in care decisions.
What Is Artificial Nutrition and Hydration?
Artificial nutrition and hydration means giving a person food and fluids through a tube or an intravenous (IV) line, rather than through the mouth. Doctors use these methods when a patient cannot swallow safely or cannot eat enough to survive.
There are two main categories of this treatment. Each works differently and suits different medical situations.
Enteral Nutrition (Tube Feeding)
Enteral nutrition delivers fluids and nutrients directly into the digestive tract through a tube. The tube may pass through the nose, throat, and oesophagus into the stomach — this is called a nasogastric tube.
Another option involves placing a tube surgically through the wall of the abdomen. A gastrostomy tube goes into the stomach, while a jejunostomy tube goes into the small intestine. These are more common for long-term use.
Parenteral Nutrition (IV Feeding)
Parenteral nutrition delivers fluids and nutrients directly into the bloodstream through a catheter placed in a vein. The catheter may go into a smaller peripheral vein, usually in the lower arm, or into a large central vein closer to the heart.
Total parenteral nutrition (TPN) provides all the basic nutrients the body needs — enough to maintain weight and produce energy. Partial parenteral nutrition provides only some of those nutrients.
What Fluids and Nutrients Are Used?
The specific fluids and nutrients used depend on the type of treatment and the individual patient’s needs. No two situations are exactly alike.
Through enteral tubes, patients can receive water, specially formulated liquid meals, or blended regular foods. Through parenteral lines, nutrients are delivered in a simplified chemical form the body can absorb directly from the blood.
For some patients, artificial nutrition and hydration is a short-term measure — for example, after surgery or during a temporary illness. For others, it becomes a long-term solution when the ability to eat and drink normally cannot be recovered.
Risks and Side Effects You Should Know About
Like any medical treatment, artificial nutrition and hydration carries real risks. It is important that patients and families understand these before agreeing to treatment.
Potential side effects and complications include:
Nausea, vomiting, and diarrhoea
Serious infections, including bloodstream infections from IV catheters
Imbalances in minerals and electrolytes
Discomfort or pain from the tube or catheter insertion
In rare but serious cases, life-threatening complications
These treatments are considered worthwhile when the benefits clearly outweigh the risks. However, when the burdens outweigh the benefits — particularly in advanced or terminal illness — they may do more harm than good. Health Canada encourages shared decision-making between patients, families, and care teams.
Common Myths About Artificial Nutrition and Hydration
Many families carry false beliefs about these treatments. Researchers have studied the actual outcomes carefully, and the results challenge several widely held myths — especially those involving people with terminal illness, neurological conditions, or advanced age.
Myth 1: A Feeding Tube Prevents Aspiration Pneumonia
The myth: A person who chokes or has trouble swallowing needs a gastrostomy tube to prevent aspiration pneumonia (a lung infection caused by inhaling food or fluids).
The reality: There is no solid evidence that gastrostomy tubes or tubes placed into the small intestine prevent aspiration pneumonia in people with swallowing difficulties. In fact, some studies show that feeding tubes may actually increase the frequency of aspiration episodes.
Furthermore, research on people in the advanced stages of Alzheimer’s disease suggests that gastrostomy tubes can cause more harm than providing no tube at all. Careful, assisted hand-feeding is often a better and more compassionate alternative.
Myth 2: Tube Feeding Speeds Up Wound Healing
The myth: Artificial nutrition helps wounds heal faster in patients who cannot eat on their own.
The reality: No reliable studies confirm that artificial nutrition and hydration speeds up wound healing. In addition, if a patient develops incontinence as a result of tube feeding, the constant moisture and irritation from urine and stool can actually damage the skin further and make wound healing harder.
Myth 3: Cancer Patients With Weight Loss Should Receive Total Parenteral Nutrition
The myth: Patients with cancer-related cachexia (severe weight loss and muscle wasting) should receive total parenteral nutrition to maintain their weight and energy levels.
The reality: Research has not shown any meaningful benefit from using total parenteral nutrition in patients with cancer-related cachexia. It does not reliably improve energy levels or promote weight gain. Some studies have even found that survival rates are lower among patients who receive this treatment. This is an important finding that many families are not aware of when making decisions.
Myth 4: Dehydration at End of Life Is Painful
The myth: A seriously ill or dying person who is not receiving fluids must be suffering from extreme thirst and pain.
The reality: Dehydration in a seriously ill elderly person or someone in the final stage of a terminal illness is generally not painful. Many palliative care specialists report that gentle mouth care — moistening the lips and mouth — is often enough to provide comfort without the risks that come with IV fluids. Mayo Clinic’s palliative care resources offer more information on comfort-focused approaches to end-of-life care.
How These Decisions Are Made in Canada
In Canada, decisions about artificial nutrition and hydration are made jointly by the patient, the family, and the medical team. Every province and territory has its own guidelines around informed consent and substitute decision-making for patients who cannot speak for themselves.
Your provincial health plan covers many of these treatments in hospital and some palliative settings. However, the coverage for home-based parenteral nutrition varies by province. It is worth asking your family doctor or specialist exactly what is covered under your provincial plan.
Advance care planning — writing down your wishes about life-sustaining treatments before a crisis — is strongly encouraged across Canada. Talking about these topics early, while you are still healthy, makes things much easier for your loved ones later. The World Health Organization’s guidance on palliative care also supports early conversations about goals of care.
When to See a Doctor or Healthcare Provider
If you or a loved one is facing a serious illness and questions about artificial nutrition and hydration have come up, do not wait. Speak with your family doctor as soon as possible. These conversations are much easier when there is no immediate crisis.
If you do not have a family doctor, a walk-in clinic can help connect you with the right specialist or palliative care team. Many Canadian hospitals also have ethics consultation services for families facing difficult medical decisions.
Ask your doctor directly:
What are the likely benefits of this treatment for my situation?
What are the risks and side effects?
Are there other options, such as comfort-focused or palliative care?
What does the evidence say for my specific condition?
Always consult a qualified healthcare provider before making any decisions about medical treatment. The information in this article is for general education only and does not replace professional medical advice.
What is the difference between enteral and parenteral nutrition?
Enteral nutrition delivers fluids and nutrients through a tube placed into the digestive tract, such as a nasogastric or gastrostomy tube. Parenteral nutrition bypasses the digestive system entirely and delivers nutrients directly into the bloodstream through an IV catheter. Your doctor will recommend one over the other based on your medical condition and digestive function.
Is artificial nutrition and hydration always helpful for seriously ill patients?
Not always. Artificial nutrition and hydration can be very helpful in short-term or reversible conditions, but research shows it may offer little or no benefit — and can even cause harm — in advanced or terminal illness. The decision should always be based on the individual patient’s goals, values, and overall medical situation.
Does a feeding tube prevent aspiration pneumonia?
No. Despite being a common belief, there is no reliable evidence that feeding tubes prevent aspiration pneumonia in patients with swallowing difficulties. In some cases, tube feeding may actually increase the risk of aspiration episodes. Careful hand-feeding is often a safer and more comfortable alternative for many patients.
Is it painful to stop artificial nutrition and hydration at end of life?
Research and clinical experience suggest that dehydration in a dying person is not typically painful. Palliative care teams focus on comfort measures such as mouth care and moistening the lips to manage any sensation of thirst. Stopping artificial nutrition and hydration at end of life is a recognised and compassionate option in Canadian palliative care practice.
Is artificial nutrition covered under Canadian provincial health plans?
Artificial nutrition and hydration provided in hospital is generally covered under provincial health plans across Canada. Coverage for home-based parenteral nutrition varies by province, so it is important to ask your family doctor or a hospital social worker about what your specific provincial plan includes. Some provinces offer special nutrition support programmes through home care services.
How do I make decisions about artificial nutrition and hydration for a family member?
Start by speaking with the patient’s family doctor or specialist to understand the likely benefits and risks for that person’s specific condition. If the patient cannot speak for themselves, a substitute decision-maker — usually a family member or legal guardian — works with the medical team to make choices that reflect the patient’s known wishes and values. Advance care planning documents, if available, are very helpful in these situations.
Key Takeaways
Artificial nutrition and hydration delivers fluids and nutrients by tube or IV when a person cannot eat or drink normally.
The two main types are enteral (through the digestive tract) and parenteral (directly into the bloodstream).
Like all medical treatments, these methods carry real risks and side effects, including infection, nausea, and electrolyte imbalances.
Several widely held beliefs about these treatments — including that feeding tubes prevent pneumonia or that dehydration at end of life is painful — are not supported by research.
In Canada, these decisions involve shared decision-making between patients, families, and healthcare teams, guided by provincial health guidelines.
Talk to your family doctor or walk-in clinic early, and consider creating an advance care plan to make your wishes known before a health crisis occurs.
