What Health Problems Are Associated with Low Birthweight
For women who are pregnant, understanding low birth weight and its associated health problems highlights the importance of prenatal care and a healthy pregnancy. Birthweight is an important indicator of a baby’s health. Low birthweight means a baby is born weighing less than 5 pounds, 8 ounces, or 2,500 grams. Some babies with low birthweight are healthy and develop normally. Others face a greater risk of health problems immediately after birth and, in some cases, later in childhood or adulthood.
For families in West Orange County, Florida, understanding low birthweight is particularly important because many of the factors that contribute to a healthy birth and development—including early prenatal care, maternal nutrition and management of health conditions—can be addressed during pregnancy.
In Florida, 9% of babies had a low birthweight in 2024, according to the Florida Department of Health. Black infants are about twice as likely as White infants to be born at a low birthweight.
What health problems are associated with low birthweight?
Why Does Low Birthweight Cause Health Concerns?
Babies are typically born with low birthweight for two main reasons. Firstly, premature birth, meaning the baby is born before 37 completed weeks of pregnancy. Secondly, fetal growth restriction, when a baby does not grow as expected during pregnancy.
The earlier or smaller a baby is at birth, the more likely the baby may need specialized medical care. However, birthweight alone does not determine a baby’s health. Gestational age, the reason for the baby’s small size, and other medical factors also matter.
The March of Dimes notes that some low-birthweight babies have few complications, while others may experience serious medical problems and require treatment in a neonatal intensive care unit, or NICU.
Breathing Problems
One of the most common problems among very small or premature babies involves the lungs.
Most lung development occurs between 24 and 36 weeks of pregnancy. Babies born too early may not have enough surfactant, a substance that helps keep the tiny air sacs in the lungs open. This can lead to respiratory distress syndrome, meaning the tiny air sacs are having difficulty staying open. This can make it difficult for a newborn to breathe without medical assistance.
Some babies may need supplemental oxygen, medication, or temporary breathing support while their lungs mature to ensure proper lung function.
Difficulty Feeding and Gaining Weight
Low-birthweight babies may have difficulty coordinating the sucking, swallowing, and breathing required for feeding.
As a result, some babies may also tire easily when breastfeeding or bottle-feeding, so healthcare providers will closely monitor nutrition to ensure proper weight gain.
To help babies thrive, some very small babies temporarily receive nutrition through a feeding tube or intravenous line until they become strong enough to eat independently.
Increased Risk of Infection
A baby’s immune system develops mainly during the final stages of pregnancy. Babies who are born early or very small may have a less-developed immune system, making it harder to fight infections.
For this reason, healthcare teams may closely monitor low-birthweight babies for signs of infection during the newborn period.
Problems Affecting the Brain
Very premature and very low-birthweight babies can have a higher risk of intraventricular hemorrhage, or bleeding within the brain. Many cases are mild, but serious bleeding can sometimes affect brain development.
The CDC identifies premature birth and low birthweight among factors associated with increased risk for a number of developmental conditions.
Intestinal and Digestive Problems
Some very premature or low-birthweight babies develop a serious intestinal condition called necrotizing enterocolitis, or NEC.
NEC causes inflammation and injury within the intestines. Babies with this condition may experience feeding problems or abdominal swelling which may require antibiotics, intravenous nutrition, or, in severe cases, surgery.
Vision Problems
Premature and very small babies can also develop retinopathy of prematurity, a condition involving abnormal development of blood vessels in the retina.
Specialists typically monitor babies at risk so they can be detected and treated as early as possible.
Developmental and Long-Term Health Concerns
The effects of low birthweight do not necessarily end when a baby leaves the hospital.
Some children born at low birthweight have an increased risk for developmental delays affecting movement, learning, communication, or other major milestones. Regular pediatric visits and developmental screenings can help identify concerns and allow for timely treatment.
Research has also associated low birthweight with a greater likelihood of certain health problems later in life, including high blood pressure, heart disease, diabetes, and metabolic conditions. This does not mean a child born at low birthweight will develop these conditions; only the statistical risk is higher.
Can Low Birthweight Be Prevented?
Not every case of low birthweight can be prevented. However, good prenatal care can help healthcare providers identify and manage conditions that may increase the risk.
That includes monitoring a baby’s growth and managing conditions such as high blood pressure and diabetes, as well as addressing infections, nutrition, and other pregnancy-related concerns.
For expectant parents in West Orange County, knowing where to find prenatal and maternal care helps support a healthy pregnancy. Beginning prenatal care early gives healthcare providers more time to monitor both the pregnant mother and developing baby.
Keeping prenatal appointments is especially important so your healthcare provider can track fetal growth, identify potential problems, and determine whether the baby needs additional testing or specialized care. Early and consistent care is important to ensure timely prenatal care and improve maternal and infant health.
The Bottom Line
Low birthweight does not automatically mean a baby will have health problems. Many babies born small grow and develop normally.
However, low birthweight can increase the risk of breathing difficulties, infection, feeding problems, brain and intestinal complications, vision problems, and developmental delays, particularly when a baby is also born prematurely.
Early and consistent prenatal care is important to ensure access to timely care and improve maternal and infant health in West Orange.
If you are pregnant, establishing prenatal care early and attending recommended appointments gives your healthcare team the best opportunity to monitor your baby’s growth and address the possibility of complications.
Need prenatal care in West Orange County? This article lists local resources and healthcare providers for pregnancy support: Community Resources in West Orange
