Health condition · plain-language reference
Birth Weight
Birth weight is the first weight of your baby, taken just after being born. A low birth weight means that the baby is less than 5 pounds, 8 ounces. A high birth weight means that the baby is more than 8 pounds, 13 ounces.
Plain-language summary from MedlinePlus (NIH/NLM) ↗. For informational purposes only — not medical advice.
What can cause low birth weight?
A baby with a low birth weight can be born too small, too early ( premature ), or both. This can happen for many different reasons. They include: Health problems in the pregnant parent Taking certain medicines during pregnancy Substance use during pregnancy Infections during pregnancy Being pregnant with multiple babies Problems with the placenta, the organ that brings oxygen and nutrients to the baby Having small parents Genetic conditions in the baby Birth defects
What problems can low birth weight cause?
Babies with low birth weight may be more at risk of certain health problems. They include immediate problems, such as: Breathing problems Infections Hypoglycemia (low blood sugar) Jaundice Trouble keeping warm There is also a higher risk of longer-term problems, including: Delayed motor and social development Learning disabilities Certain health conditions as an adult, such as heart disease , high blood pressure , diabetes , and obesity
What can cause high birth weight?
Causes of high birth weight can include: Having big parents Diabetes in the pregnant parent Certain genetic conditions Too much weight gain during pregnancy
What problems can high birth weight cause?
High birth weight can be a concern because it can make delivery of the baby difficult and raise the risk of birth injuries. The baby is at higher risk of problems with: Blood sugar Breathing problems Jaundice
Can birth weight problems be prevented?
You may be able to prevent some birth weight problems by: Getting regular checkups during pregnancy Getting the right amount of nutrition and calories during pregnancy Controlling your blood sugar if you have diabetes Avoiding substance use during pregnancy
Medications used for birth weight
Drugs whose FDA labeling names this condition among its indications — informational, not a recommendation.
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