Top News

Your baby’s brain and spinal cord begin forming very early in pregnancy. They develop from a structure called the neural tube. Usually, this tube closes properly within the first 28 days after conception. However, if the tube does not close completely, neural tube defects (NTDs) may occur. These congenital conditions can affect the brain, the spinal cord, and the supporting structures. Some neural tube defects are mild and manageable. Others may cause serious physical or developmental complications.



Understanding neural tube defects may also help you feel more prepared during pregnancy planning.



What Are Neural Tube Defects (NTDs)?

Neural tube defects are birth defects. These complications happen when the neural tube does not form optimally during early pregnancy.



The severity can differ widely from one baby to another.







The following are the different types of neural tube defects:





1. Spina Bifida

It is the most common form of defect.



Features

• The spinal bones fail to close properly
• Part of the spinal cord may remain exposed
• Nerves may become damaged

The effects depend on the area and severity of the defect.



A child may experience:

• Weakness or paralysis in the legs
• Difficulty walking
• Curvature of the spine
• Bladder and bowel control problems
• Frequent infections in the urinary tract
• Impaired learning abilities in some cases

2. AnencephalyIt is a severe form of neural tube defect. It mainly involves the brain and skull.



Features

• Major brain parts do not develop properly
• Certain skull regions may be partially formed or completely missing

The most unfortunate aspect is that babies with anencephaly do not have a long life span.



3. EncephaloceleIn this condition, brain tissue protrudes out through any opening in the skull. It is a rare defect.



The symptoms may range from mild to severe. In severe forms, the condition might affect facial or neurological development.



Why Neural Tube Development Matters

The neural tube is the foundational tissue that develops into your baby’s nervous system (brain, spinal cord, and nerves).



All these structures are vital for a human being to lead a healthy and fulfilling life.



Since the risk of these defects developing is higher in the early months of pregnancy, early care, proper nutrition, and antenatal testing are highly crucial



How Does the Neural Tube Develop Normally?

The two sides of the foetus's spine fuse to shield the spinal cord, spinal nerves, and meninges (tissue layers covering brain tissue).



All of this generally happens during your first month of pregnancy. In the early stages, the developing brain and spinal tissue are called the neural tube.



As development progresses, the brain emerges from the upper part of the neural tube.



The remaining portion forms the spinal cord.



When this tube fails to close properly at some point along its length, an NTD develops.



What Causes Neural Tube Defects?The exact cause behind NTDs is still under research. Generally, genetic, nutritional, environmental, and medical factors play a role.



The following are the risk factors that may increase the risk of NTDs:

Risk Factor	Description
Folate deficiency	Folate is important for the healthy development of the baby.
History of neural tube defects	If you have a history of one baby with an NTD, you have a 2% to 3% increased risk of having another baby with an NTD.
Certain antiseizure medications	These medications can cause neural tube defects when taken during pregnancy.
Pre-existing diabetes	Having poorly managed diabetes during pregnancy puts you at a higher risk of having a baby with an NTD.
Obesity	If you have obesity before pregnancy, you have an increased risk of having a baby with an NTD.
Increased body temperature in early pregnancy	Increases in core body temperature in the early weeks of pregnancy have been associated with a slightly increased risk of NTDs. This may be due to a prolonged fever or use of a sauna or hot tub.

Why Folic Acid Is Important for Preventing Neural Tube DefectsFolic acid (a form of vitamin B9) promotes cell growth and neural tube formation during foetal development.





Natural food sources of folateYou may get folate from foods such as:

• Spinach
• Fenugreek leaves
• Mustard greens
• Lentils
• Chickpeas
• Oranges
• Groundnuts
• Fortified cereals

However, diet alone may not always meet the increased requirements during pregnancy planning.



People who are at high-risk may require higher doses.



Generally, your risk is analysed before conception and treatment is planned accordingly.



What Are the Complications of Neural Tube Defects Possible physical complications

• Difficulty moving the legs
• Muscle weakness
• Paralysis
• Bone deformities
• Joint stiffness
• Poor coordination

Bladder and bowel complications

• Urinary incontinence
• Difficulty emptying the bladder
• Constipation
• Recurrent urinary tract infections

Brain-related complications

• Learning ability
• Memory
• Concentration
• Speech development
• Hydrocephalus (excess fluid builds up inside the brain)

How Are Neural Tube Defects Diagnosed During Pregnancy?Early screening helps doctors identify many neural tube defects before birth.



Maternal blood screeningA blood test during pregnancy may measure alpha-fetoprotein (AFP) levels.



Abnormal AFP levels may sometimes suggest:

• Spina bifida
• Other congenital conditions

However, additional testing is usually needed for confirmation.

Ultrasound scansDetailed ultrasound scans are important for detecting structural abnormalities.



Doctors may identify:

• Spinal defects
• Brain abnormalities
• Skull development problems

Important scans usually include:

• First trimester scan
• Mid-pregnancy anomaly scan

AmniocentesisIn selected cases, doctors may recommend amniocentesis.



This procedure involves testing amniotic fluid for abnormalities.



It is generally advised only when medically necessary.



Treatment and Care OptionsTreatment depends on:

• The type of neural tube defect
• Severity of symptoms
• Presence of associated complications

Before birthIn certain severe cases of spina bifida, foetal surgery may be considered.



This specialised surgery is available only in selected centres and requires careful evaluation.



Surgery after birthSome babies may need surgery soon after delivery to:

• Protect the spinal cord
• Reduce infection risk
• Repair structural defects

Long-term rehabilitationOngoing support may include:

• Physiotherapy
• Occupational therapy
• Mobility aids
• Orthopaedic care
• Speech therapy
• Educational support

Learning that your baby might develop a neural tube defect (NTD). It may turn your world upside down. You may have a million questions in your mind. But you’re not alone. The experts can help you prepare and deal with the situation in the most appropriate manner.



Whether you’re pregnant, a new mom, or navigating postpartum, you don’t have to do it alone. Join our support group to connect, share, and support one another.



FAQs on Neural Tube Defects: Prevention, Early Signs, and Care Options

Can neural tube defects happen even in healthy pregnancies?

Yes. Neural tube defects may sometimes develop even when there are no obvious risk factors. That is why early prenatal care and folic acid intake remain important for every pregnancy.

Is folic acid needed before pregnancy?

Yes. Neural tube formation happens very early, often before pregnancy is confirmed. Taking folic acid before conception may help lower the risk of neural tube defects.

Can children with spina bifida live independently later in life?

Many children with spina bifida can lead fulfilling and productive lives with proper care and comprehensive support.