Introduction
Welcoming a new baby into the world is a joyous occasion, but it can also come with unexpected challenges, especially when it involves concerns about the baby’s health. One such concern is newborn low blood sugar, which can lead to NICU (Neonatal Intensive Care Unit) admission. In this blog, we will explore the causes, management, and hope that surround this common but manageable issue.
Understanding Newborn Low Blood Sugar
Newborn low blood sugar, also known as neonatal hypoglycemia, occurs when a baby’s blood sugar levels are lower than normal. Glucose is vital for the baby’s brain development and overall growth, making it crucial to monitor and address low blood sugar promptly.
Causes of Newborn Low Blood Sugar
Several factors can contribute to low blood sugar levels in newborns, including:
Maternal Diabetes
If the mother has diabetes (gestational or pre-existing), the baby may produce extra insulin in response, which can lead to low blood sugar after birth.
Premature Birth
Premature infants may not have fully developed glycogen stores, making them more susceptible to low blood sugar.
Inadequate Feeding
Delayed or insufficient feeding can result in low glucose levels in newborns.
Birth Stress
The stress of labor and delivery can temporarily affect blood sugar levels.
Metabolic Disorders
Rare metabolic disorders can affect a baby’s ability to regulate blood sugar.

Signs and Symptoms
Newborns with low blood sugar may exhibit the following symptoms:
- Jitteriness or Tremors
- Poor Feeding
- Lethargy
- Irritability
- Seizures (in severe cases)
Read Also: What Is Newborn Colic?
Diagnosis and NICU Admission
If a healthcare provider suspects low blood sugar, they will perform a blood glucose test. If the baby’s glucose levels are consistently low, they may be admitted to the NICU for close monitoring and treatment.
Treatment and Management
The management of newborn low blood sugar typically involves:
Feeding
Providing the baby with frequent feedings of breast milk or formula to raise blood sugar levels.
Intravenous (IV) Glucose
In severe cases, intravenous glucose may be administered to stabilize blood sugar levels quickly.
Monitoring
Regular monitoring of blood glucose levels to ensure they remain within a safe range.
Addressing Underlying Causes
Treating any underlying medical conditions contributing to low blood sugar.

The Importance of Early Detection
Early detection and treatment of newborn low blood sugar are essential to prevent potential complications and ensure the baby’s overall health and development.
Hope and Reassurance
While NICU admission can be a stressful experience for parents, it’s important to remember that newborn low blood sugar is a common issue, and with proper care and monitoring, most infants recover fully. NICU staff are experienced in providing specialized care and support to both babies and their families during this time.
Read Also: Infant Medicine for Acid Reflux
Conclusion
Newborn low blood sugar and NICU admission can be a challenging experience for parents, but it is often a temporary one. With prompt diagnosis, treatment, and the support of healthcare professionals, most infants with low blood sugar go on to lead healthy and fulfilling lives. If you have concerns about your baby’s blood sugar levels or NICU admission, don’t hesitate to discuss them with your healthcare provider, who can provide guidance and reassurance throughout this journey.
FAQs
Why would a baby’s blood sugar below?
Low blood sugar level is more likely in infants with one or more of these risk factors: Born early, has a serious infection, and/or needs oxygen right after delivery. Mother has diabetes. Slower than expected growth in the womb during pregnancy.
How long does low blood sugar last in babies?
Usually, low blood glucose levels will only last for a few hours but can last up to 24-72 hours. Once your baby’s levels become normal, he shouldn’t have further problems with hypoglycemia (another name for low blood glucose). In very rare cases, low blood sugar can be severe or last a long time.
How do you prevent low blood sugar in babies?
If your newborn is at high risk for hypoglycemia, your doctor may treat them preemptively with intravenous or oral glucose. Or, they may put the baby on a schedule of frequent formula feedings to ensure they get enough carbohydrates.
Can low sugar go away?
If your low blood sugar is mild (between 55-69 mg/dL), you can return to your normal activities once your blood sugar is back in its target range. After you have low blood sugar, your early symptoms for low blood sugar are less noticeable for 48 to 72 hours.
What foods raise blood sugar quickly?
In general, foods that cause blood sugar levels to rise the most are those that are high in carbohydrates, which are quickly converted into energy, such as rice, bread, fruits, and sugar. Next are foods high in protein, such as meats, fish eggs, milk and dairy products, and oily foods.