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

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

Most Babies Sleep Through Night at 3 Months

Study Shows 3 Months Is Most Likely Age for Babies to Sleep From 10 p.m. to 6 a.m.

When Parents Can Expect Relief continued...

"Further, by the end of the first year, 87%, 86%, and 73% of infants had met the criterion, respectively."

The practical applications? "This is a developmental guide for parents of the capability of healthy, typically developing infants for sleeping through the night," Henderson tells WebMD. "Please remember that each child develops at their own rate as reflected in the different and increasing rates of sleeping through over the first year."

"Parents should not be worried if their infant has not begun to sleep through the night at 2 and 3 months," she says, noting that not all did so.

Second Opinion

The new research adds some additional data to previous research and conventional wisdom, says Judith Owens, MD, MPH, associate professor of pediatrics at Alpert Medical School at Brown University and director of the pediatric sleep disorders clinic at Hasbro Children's Hospital, Providence, R.I.

Sleep consolidation, she tells WebMD, "is an important developmental 'sleep milestone' occurring in the first four months of life."

"While two months is perhaps a bit earlier than typically predicted for 'sleeping through the night,' the findings in general are in agreement with previous studies," she says.

Common wisdom has it that an infant will begin sleeping through the night at around age 3 months, Owens says. Before that, short periods of sleep, typically three or four hours, interspersed with short periods of wakefulness, two hours or so, are normal. "At around three months we start to see this ability to consolidate sleep."

Using the criteria of 10 p.m. to 6 a.m., she says, is more helpful as it is more practical for most parents.

1 | 2

Baby's First Year Newsletter

Because every week matters, get expert advice and facts on what to expect in your baby's first year.

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