Feeding tubes carry real risks, but for most people who need them, they are not considered inherently dangerous. Overall complication rates range from 16% to 70% depending on the type of tube and patient population, though the vast majority of those complications are minor: skin irritation, leaking around the tube site, or clogging. Major complications occur in roughly 3% to 15% of cases and can include serious infections, aspiration pneumonia, or tube misplacement.
Whether a feeding tube is “dangerous” depends heavily on why it’s being placed, what type of tube is used, and the overall health of the person receiving it. Here’s what you should know about each risk.
The Placement Procedure Itself
The most common long-term feeding tube is a PEG tube, which is placed through the abdominal wall directly into the stomach using a small camera guided through the throat. The 30-day mortality rate after PEG placement is approximately 5%. That number sounds alarming, but context matters: most people receiving feeding tubes are already seriously ill, elderly, or malnourished. A large national analysis of nearly 88,000 patients in England found that increasing age and higher numbers of existing health conditions were the strongest predictors of dying within 30 days, not the procedure itself. Over the study period from 2007 to 2019, 30-day mortality fell by 60%, largely because doctors became more selective about who received a tube in the first place.
Nasogastric (NG) tubes, the kind threaded through the nose into the stomach, have a different risk profile. About 2% of small-bore NG tubes are accidentally inserted into the airway instead of the esophagus. When that happens, roughly 26% of those misplacements lead to complications including pneumonia, lung abscesses, or punctured airways. Two deaths were reported in one retrospective study of misplaced tubes. This is why hospitals use X-rays or other verification methods before starting a feed through a new NG tube.
Infection at the Tube Site
Infection around the stoma (the opening in the skin where a PEG tube enters the body) is one of the most common complications. In a study from a university teaching hospital, 28.8% of PEG patients developed at least one infection at the tube site. These infections typically cause redness, swelling, warmth, and sometimes drainage around the opening. Most respond to antibiotics and improved wound care, but if left untreated, they can spread deeper into the tissue.
Keeping the site clean and dry, rotating the external bumper as instructed, and watching for early signs of redness are the most effective ways to catch infections before they become serious.
Aspiration Pneumonia
One of the most feared complications of tube feeding is aspiration pneumonia, which happens when formula or stomach contents are inhaled into the lungs. In tube-fed patients, the reported prevalence ranges widely, from 4% to 95% depending on the study population, with mortality rates between 17% and 62% when it occurs.
Elevating the head of the bed during and after feeding is the primary way to reduce this risk. Interestingly, research has not found a significant difference in aspiration rates between tubes that deliver formula to the stomach versus those that deliver it further down the digestive tract. People who are sedated, have impaired swallowing reflexes, or lie flat during feeds face the highest risk.
Clogging and Mechanical Problems
Feeding tubes clog more often than most people expect. Occlusion rates range from 23% to 35% for PEG tubes, and actual numbers are likely higher because many cases go unreported. The most common causes are inadequate flushing with water after feeds or medications, crushed pills that don’t fully dissolve, thick formulas, and narrow-bore tubes. Regular flushing with warm water before and after each use is the simplest prevention.
A less common but more serious mechanical problem is buried bumper syndrome, where the internal disc that holds the tube in place migrates into the stomach wall or abdominal tissue. This occurs in about 0.3% to 2.4% of PEG patients and causes increasing pain around the tube site, difficulty pushing formula through, and sometimes redness or swelling. It happens most often when the external part of the tube is secured too tightly against the skin. Left unaddressed, it can lead to abscesses, tissue death, or perforation.
Risks Specific to Children
Children with feeding tubes experience complications frequently, but severe ones are rare. In a pediatric study, 81% of children had at least one complication over a six-month period. The most common were skin irritation (48%), vomiting (43%), and abdominal pain (39%). Severe complications like aspiration pneumonia (1%), obstruction (0%), and perforation (0%) were essentially absent.
Complications tend to be worst in the first year after placement and decrease significantly after three years. Children with gastrojejunostomy tubes (which bypass the stomach and feed into the small intestine) had higher complication rates overall, with nausea being nearly universal.
Refeeding Syndrome
When someone who has been eating very little suddenly starts receiving nutrition through a tube, their body can react with dangerous drops in key minerals like phosphorus, potassium, and magnesium. This is called refeeding syndrome, and it typically develops within the first five days of feeding. Reported rates range from less than 1% to 18% in hospitalized patients. In one study of ICU patients who hadn’t eaten for at least 48 hours, 34% developed low phosphorus levels within about two days of restarting nutrition.
Severe cases can cause heart rhythm problems, confusion, muscle weakness, and organ dysfunction. This is why medical teams generally start tube feeding slowly and monitor bloodwork closely in malnourished patients.
Feeding Tubes in Advanced Dementia
The risk-benefit balance shifts dramatically for people with advanced dementia. Multiple studies have found that feeding tubes do not improve survival in this population and may actually worsen outcomes. In one study, mortality at six months was 28% for patients fed by hand compared to 58% for those given feeding tubes. Another found 70% mortality in PEG-fed dementia patients versus 40% in those fed orally. Aspiration pneumonia occurred almost twice as frequently in tube-fed dementia patients compared to those fed by mouth.
The American Geriatrics Society has stated that careful hand feeding provides outcomes for comfort, aspiration risk, function, and survival that are nearly equivalent to tube feeding in this group. For families facing this decision, the evidence consistently shows that tube feeding does not extend life or improve quality of life in late-stage dementia.
Who Benefits Despite the Risks
Feeding tubes are most clearly beneficial for people who have a functioning digestive system but cannot swallow safely or take in enough calories by mouth. This includes many children with developmental conditions, adults recovering from head and neck cancers, people with neurological conditions that impair swallowing, and patients needing temporary nutritional support after surgery or critical illness. In these groups, the risks of malnutrition and dehydration without a tube typically far outweigh the complications of having one.
The key factor in safety is patient selection. The same tube that saves a young person recovering from throat surgery may offer no benefit, and real harm, to an elderly person with end-stage dementia. Most complications are manageable with proper care, and severe ones are uncommon in otherwise appropriate candidates.