Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community


    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Health & Baby

Font Size

Premature Infant - Topic Overview

Is this topic for you?

This topic is for people who want to know what to expect when a baby is born early. For information about early labor, its causes, and its treatment, see the topic Preterm Labor.

What is premature birth?

Pregnancy normally lasts about 40 weeks. A baby born 3 or more weeks early is premature. Babies who are born closer to their due dates tend to have fewer problems than babies born earlier. But even those who are born late preterm (closer to 37 weeks) are at risk for problems.

Doctors and nurses often call premature babies "preemies."

Having a premature baby may be stressful and scary. To get through it, you and your partner must take good care of yourselves and each other. It may help to talk to a spiritual advisor, counselor, or social worker. You may be able to find a support group of other parents who are going through the same thing.

Why is premature birth a problem?

When a baby is born too early, his or her major organs are not fully formed. This can cause health problems.

  • Babies who are born closer to 32 weeks (just over 7 months) may not be able to eat, breathe, or stay warm on their own. But after these babies have had time to grow, most of them can leave the hospital.
  • Babies born earlier than 26 weeks (just under 6 months) are the most likely to have serious problems. If your baby was born very small or sick, you may face hard decisions about treatment.

What causes premature birth?

Premature birth can be caused by a problem with the fetus, the mother, or both. Often the cause is never known. The most common causes include:

  • Problems with the placenta.
  • Pregnancy with twins or more.
  • Infection in the mother.
  • Problems with the uterus or cervix.
  • Drug or alcohol use during pregnancy.

What kind of treatments might a premature infant need?

Premature babies who are moved to the neonatal intensive care unit (NICU) are watched closely for infections and changes in breathing and heart rate. Until they can maintain their body heat, they are kept warm in special beds called isolettes.

    Next Article:

    Today on WebMD

    mother on phone holding baby
    When you should call 911.
    parents and baby
    Unexpected ways your life will change.
    baby acne
    What’s normal – and what’s not.
    baby asleep on moms shoulder
    Help your baby get the sleep he needs.

    mother holding baby at night
    mother with sick child
    Chinese mother breast feeding newborn baby girl
    Track Your Babys Vaccines
    Baby Napping 10 Dos And Donts
    Woman holding feet up to camera
    Father kissing newborn baby
    baby gear slideshow