Spina bifida is not the death sentence it was once considered, but it can be fatal depending on the type, the location of the spinal defect, and the quality of medical care available. Before the 1960s, most infants born with the severe open form died in infancy. Today, with modern surgical techniques and coordinated care, the majority survive into adulthood, though they face ongoing health risks that shorten life expectancy compared to the general population. The gap between best-case and worst-case outcomes is enormous, and understanding what drives that gap matters for families navigating a diagnosis.
How Survival Has Changed Over Decades
The story of spina bifida survival is largely a story of medical progress. Before antibiotics, shunt technology for draining excess brain fluid, and reliable surgical closure of the spinal defect became available in the 1950s and 1960s, the condition was widely treated as unsurvivable, and many newborns received no intervention at all.1PubMed Central. Living with spina bifida: a historical perspective That changed rapidly. Register-based data spanning five decades show that first-year survival rose from about 75% to 94% as neonatal care improved.2PubMed. Mortality rates, cause and risk factors in people with spina bifida, register-based study over five decades After the first birthday, mortality rates have been consistently low in childhood and adolescence, and the differences between earlier and later decades are small. The biggest gains came in keeping newborns alive through their first year.
What the Long-Term Numbers Actually Look Like
Surviving infancy does not erase the risk. A landmark 40-year study that followed every baby born with open spina bifida in one region of the UK between 1963 and 1971 found that roughly one in three died before age five. Another quarter died over the next 35 years, a rate more than ten times the national average for their age group.3PubMed. Expectation of life and unexpected death in open spina bifida: a 40-year complete, non-selective, longitudinal cohort study That cohort was born before many modern advances, so today’s numbers look better, but they illustrate a critical point: mortality does not plateau after childhood. It continues at elevated rates throughout adulthood, and doctors and caregivers who assume otherwise may miss warning signs.
More recent life-expectancy modeling paints a wide range depending on functional ability. For a five-year-old boy with severe impairments in walking, feeding, and bladder and bowel control, the projected additional life expectancy was about 27 years. For a five-year-old boy with the mildest impairments, it was about 65 additional years, compared with 70 years in the general population.4PubMed Central. Life expectancy in open spina bifida That spread, from the early thirties to the early seventies, captures why no single answer to “is it fatal?” is honest. The same diagnosis can mean profoundly different things for different people.
The Risks That Kill in Infancy
For newborns with spina bifida, the most dangerous period is the first year. A systematic review and meta-analysis of infant mortality identified the strongest predictors of early death: being born premature roughly quadrupled the risk, and low birth weight had a similar effect. Having a defect high on the spine (in the cervical or thoracic region rather than the lower back), the presence of hydrocephalus, and having multiple birth defects all independently raised the odds of dying in infancy.5PLoS ONE. Neonatal and infant mortality associated with spina bifida: A systematic review and meta-analysis Registry data from the United States also point to hydrocephalus, infections, heart defects, pneumonia, and blood clots in the lungs as common causes of neonatal and early childhood death.6PubMed Central. Analysis of Mortality among Neonates and Children with Spina Bifida: An International Registry‐Based Study, 2001‐2012
None of those risk factors is a guaranteed outcome, but they interact. A baby born at term, with a low lumbar defect and no hydrocephalus, faces a very different first year than a premature baby with a thoracic-level defect and multiple additional anomalies. This is why prenatal imaging and early specialist evaluation are so important: they help families and medical teams understand which end of the risk spectrum a particular case falls on.
Why the Location of the Defect Matters So Much
The level of the spinal lesion is one of the strongest predictors of both survival and lifelong function. The spine is divided into regions from top to bottom: cervical, thoracic, lumbar, and sacral. A higher defect means more of the spinal cord is affected, which translates to more paralysis, more complications, and higher mortality. Population-based data confirm that a thoracic-level lesion carries a significantly higher death rate than a lumbar or sacral one.7PubMed. Correlation of mortality with lesion level in patients with myelomeningocele: a population-based study
The 40-year UK cohort study quantified this starkly: only about 17% of individuals born with a high sensory level (above T11, roughly the mid-back) survived to around age 40, compared with 61% of those with a low sensory level (below L3, in the lower lumbar spine).3PubMed. Expectation of life and unexpected death in open spina bifida: a 40-year complete, non-selective, longitudinal cohort study Higher lesions tend to come with more severe hydrocephalus, more respiratory problems, and less ability to walk, all of which compound each other.
Hydrocephalus and the Shunt Problem
Most children with the open form of spina bifida (myelomeningocele) develop hydrocephalus, a buildup of fluid in the brain that requires a surgically placed shunt to drain. The shunt is a lifesaver, but it is also a lifelong liability. In a ten-year review at a single institution, shunt complications affected about 30% of patients, with mechanical failures and infections being the most common problems. Shunt infections occurred in roughly 23% of infants, and the overall mortality rate in that cohort was about 7%.8PubMed Central. Clinical Outcomes and Complication Rates of Ventriculoperitoneal Shunts in Hydrocephalic Infants with Meningomyelocele: A Ten-Year Review at a Single Institution
A malfunctioning shunt can cause pressure to build inside the skull rapidly, sometimes without obvious warning. In the 40-year UK cohort, over half of adult deaths were sudden and unexpected, and four of the seven sudden adult deaths showed evidence of acute raised pressure from shunt malfunction.9PubMed Central. Expectation of life and unexpected death in open spina bifida: 40 year complete, non-selective longitudinal cohort study This is one of the most underappreciated risks in adult life with spina bifida. Shunts can fail silently at any age, and the symptoms (headaches, vision changes, drowsiness, nausea) are easy to attribute to other causes or dismiss entirely.
Chiari II Malformation and Breathing Problems
Almost all children with myelomeningocele also have a Chiari II malformation, where part of the brainstem and cerebellum are pushed downward into the spinal canal. This can compress structures that control breathing, swallowing, and heart rate. In most children it causes no symptoms, but when it does become symptomatic, the results can be devastating. A study of children with symptomatic Chiari II found that those who developed symptoms in the first three months of life had a death rate of about 44%, compared with roughly 6% for children whose symptoms appeared later. Central apnea, where the brain stops sending signals to breathe, was present in nearly all of the children who died.10Journal of Neurosurgery: Pediatrics. Predictors of mortality in children with myelomeningocele and symptomatic Chiari type II malformation
In adults, Chiari II remains a risk factor. Studies of early adult death in spina bifida consistently identify hydrocephalus and Chiari II malformation, along with infection and respiratory failure, as leading contributors.11PubMed. Co-morbidities Associated With Early Mortality in Adults With Spina Bifida
The Kidneys and Bladder as a Long-Term Threat
Renal and urinary complications have historically been the leading killer in adults with spina bifida, and they remain a top concern. Because the nerves controlling the bladder are almost always affected, most people with myelomeningocele cannot empty their bladder normally. Over time, untreated or poorly managed bladder dysfunction leads to recurrent infections, kidney damage, and eventually kidney failure.
An analysis of in-hospital deaths among spina bifida patients found that urologic disorders were the single leading cause of death, accounting for about 17% of hospital deaths. Within that category, urinary tract infections and kidney failure were the most common specific causes, followed by bladder cancer.12Urology. Urologic Disorders are Still the Leading Cause of In-hospital Death in Patients With Spina Bifida In an older UK cohort, kidney failure was also the top confirmed cause of death in adults, responsible for a third of cases where the cause could be determined.13PubMed. Factors affecting mortality and morbidity in adult spina bifida
The encouraging part is that much of this damage is preventable with lifelong urologic monitoring, clean intermittent catheterization, and timely intervention for upper tract deterioration. The discouraging part is that many adults with spina bifida lose access to coordinated specialist care after they age out of pediatric clinics.
Fetal Surgery and How It Changes the Outlook
One of the most significant advances in spina bifida care over the past two decades is fetal surgery, where the spinal defect is repaired while the baby is still in the womb. The landmark MOMS trial, published in 2011, showed that prenatal repair cut the need for a brain-fluid shunt roughly in half (about 40% needed one, versus about 82% after postnatal repair) and improved motor outcomes at 30 months, including the ability to walk independently.14PubMed Central. A randomized trial of prenatal versus postnatal repair of myelomeningocele Follow-up data from the decade after the MOMS trial have broadly confirmed these benefits: prenatal repair roughly halved shunt requirements and doubled the rate of independent walking.15PubMed. Fetal myelomeningocele repair after the MOMS trial: a systematic review of neurosurgical outcomes and evolving techniques
There are trade-offs. Fetal surgery carries real risks for the mother, including preterm delivery and uterine complications at delivery.14PubMed Central. A randomized trial of prenatal versus postnatal repair of myelomeningocele A systematic review of studies after the MOMS trial also found that overall mortality was somewhat higher in prenatally treated cases, likely reflecting the increased risk of very premature birth.16PubMed Central. Myelomeningocele Surgery over the 10 Years Following the MOMS Trial: A Systematic Review of Outcomes in Prenatal versus Postnatal Surgical Repair Fetal surgery does not eliminate complications either; the rate of symptomatic tethered cord, where scar tissue re-anchors the spinal cord and causes neurological decline, has been reported as high as 27% in the prenatal cohort.17PubMed Central. First‐In‐Human Application of Human Umbilical Cord‐Derived Extracellular Vesicles in Tethered Spinal Cord Release Surgery Still, the net effect on long-term function, especially avoidance of shunt dependency and improved mobility, makes prenatal repair the preferred option for eligible cases at experienced centers.
Pressure Ulcers and the Cascade They Can Start
This one surprises people who think of spina bifida primarily as a brain and spine condition. Because most affected individuals have reduced or absent sensation in their lower body, they are extremely vulnerable to pressure ulcers from wheelchair use, braces, or simply sitting or lying in one position. These are not minor skin irritations. They can progress to deep tissue damage, bone infection, sepsis, and in severe cases, limb amputation or death.
The numbers are striking. About a quarter of individuals with myelomeningocele develop a pressure ulcer at some point, and the annual rate in adults is around 34%, far higher than in the general population. Wheelchair users face roughly 74% higher odds of developing pressure ulcers, and bladder incontinence raises the risk further.18PubMed Central. Factors Associated With Pressure ulcers in Individuals With Spina Bifida Daily skin checks, proper cushioning, weight shifts, and prompt treatment of even small sores are among the most important but least glamorous aspects of staying alive with spina bifida.
What Happens When Pediatric Care Ends
One of the most dangerous periods in the life of someone with spina bifida is, paradoxically, not medical at all. It is the transition from pediatric to adult care, typically in the late teens or early twenties. Pediatric spina bifida clinics tend to be multidisciplinary, with neurosurgeons, urologists, orthopedists, and rehabilitation specialists all in one place. Adult medicine rarely works this way. Many adults with spina bifida struggle to find providers who understand their condition, and some fall out of regular medical follow-up entirely.
Research on this transition has found that adults who did not successfully connect with an adult care provider ended up using more emergency room visits and inpatient hospitalizations than those who did, while children still in the multidisciplinary clinic model used more routine outpatient care.19PubMed Central. 2023 Updates to the Spina Bifida Transition to Adult Care Guidelines Emergency-driven care instead of preventive follow-up is exactly the pattern that allows shunt malfunctions, kidney deterioration, and pressure ulcers to become life-threatening before anyone intervenes.
Survival in Low-Income Countries
Everything discussed so far assumes access to reasonably modern medical infrastructure. In low-income and lower-middle-income countries, the picture is grimmer. A systematic review of surgical outcomes in these settings found a median 30-day postoperative mortality of about 9%, with one-year mortality of 17%, five-year mortality of 29%, and ten-year mortality of 43%.20Journal of Neurosurgery: Pediatrics. Surgical management of myelomeningocele in low-income and lower-middle-income countries: a systematic review These figures are dramatically worse than contemporary rates in high-income countries and reflect not just surgical limitations but also lack of shunt availability, limited follow-up care, and higher rates of infection.
For families in these regions, the question “is spina bifida fatal?” often receives a different practical answer than it does in a well-resourced medical system. Access to a trained neurosurgeon, a functioning shunt, and ongoing bladder management can mean the difference between a decades-long life and death in early childhood.
Prevention Through Folic Acid
The most effective intervention against spina bifida fatality is preventing the condition from occurring. Folic acid supplementation before and during early pregnancy has been shown to dramatically reduce the incidence of neural tube defects including spina bifida. A meta-analysis of population-based studies found that mandatory folic acid food fortification reduced neural tube defect incidence by about 46%.21PubMed Central. Folic acid to reduce neonatal mortality from neural tube disorders Countries that have adopted flour fortification, including the United States, Canada, Chile, and many others, have seen substantial drops in spina bifida births.22PubMed. Cost-effectiveness of a folic acid fortification program in Chile
Folic acid does not prevent all cases, and some pregnancies affected by spina bifida occur despite adequate supplementation. But on a population level, fortification is the single most impactful public health measure against this condition.
Latex Allergy as an Overlooked Danger
People with spina bifida face an unusually high rate of latex allergy, a risk that can become life-threatening if not recognized. In one study, 60% of spina bifida patients showed evidence of latex sensitization, and those who were allergic had undergone significantly more surgical procedures than those who were not, suggesting the allergy develops through repeated exposure during medical care.23PubMed. Evaluation and risk factors of latex allergy in spina bifida patients: is it preventable? Reactions range from skin irritation to full anaphylaxis. Most spina bifida clinics now operate under strict latex-free protocols, and families are advised to request latex-free environments for any medical procedure. This is one of those risks that is entirely manageable with awareness but potentially fatal without it.
Pregnancy in Women With Spina Bifida
As more people with spina bifida survive into their reproductive years, pregnancy outcomes have become a relevant question. Women with spina bifida who become pregnant face higher rates of several complications compared with women without birth defects. The most pronounced risks are admission to intensive care during the delivery hospitalization and respiratory complications, with one study finding respiratory issues nearly ten times more common than in the comparison group.24PubMed. Pregnancy outcomes of women with spina bifida These elevated risks do not make pregnancy impossible, but they do require careful planning with a high-risk obstetric team and awareness of the unique challenges that spina bifida introduces, from urinary management during pregnancy to anesthesia considerations given prior spinal surgeries and shunt hardware.
Mental Health and Suicide
The physical risks of spina bifida receive most of the medical attention, but the psychological burden deserves mention. Living with a complex chronic condition that affects mobility, continence, and social participation takes a toll. In one UK cohort of 695 adults with spina bifida studied over 16 years, three of the 30 confirmed deaths were suicides, making it one of the identified causes of mortality alongside kidney failure, cardiac disease, and respiratory failure.13PubMed. Factors affecting mortality and morbidity in adult spina bifida Three cases in one cohort is a small number, but it points to a reality that quality-of-life support, mental health screening, and social integration are not luxuries for this population. They are part of staying alive.