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A parent playing with a newborn.

Updated on Jun. 5, 2026

8 minute read

What the Data Actually Says About Breastfeeding

Emily Oster, PhD

Father holding newborn baby sleeping on shoulder

Updated on Jun. 5, 2026

4 minute read

Does My Newborn Need Treatment for Jaundice?

Emily Oster, PhD

In the news

Updated on Jun. 2, 2026

12 minute read

Antidepressants During Pregnancy, Breastfeeding, and Trying to Conceive

Emily Oster, PhD

An infant at a daycare smiles while playing with other babies and toys.

Updated on May 29, 2026

12 minute read

How Does Day Care Impact Children?

Emily Oster, PhD

A nursery.

Updated on Apr. 29, 2026

2 minute read

What Temperature Should My Baby’s Room Be?

Emily Oster, PhD

Newborn with umbilical cord

Updated on Apr. 27, 2026

2 minute read

What’s the Data on Delayed Cord Clamping?

Emily Oster, PhD

Newborn baby at hospital with mother

Updated on Apr. 23, 2026

3 minute read

Is the Vitamin K Shot Necessary for Newborns?

Emily Oster, PhD

A one-day-old newborn infant sleeps in its crib in the hospital.

Updated on Apr. 21, 2026

10 minute read

Do I Need a SNOO?

Emily Oster, PhD

Child breastfeeding

Updated on Apr. 15, 2026

4 minute read

How Can I Wean My Child From Breastfeeding?

Emily Oster, PhD

child sleeping on a couch

Updated on Mar. 17, 2026

9 minute read

Sleep Survey Results: The Naps

Emily Oster, PhD

baby taking milk from feeder

Updated on Mar. 17, 2026

2 minute read

What Happens to Milk Supply When You Stop Nighttime Feeding?

Emily Oster, PhD

A baby sleeping peacefully.

Updated on Mar. 13, 2026

2 minute read

Did Denmark Ban Sleep Training?

Emily Oster, PhD

A stash of filled breast milk freezer bags is seen with a hand on either side of the bag.

Updated on Feb. 27, 2026

12 minute read

How to Store Breast Milk

Emily Oster, PhD

A scoop of baby powder spilled on a blue background next to a teddy bear and empty bottle.

Updated on Feb. 26, 2026

4 minute read

Is It Safe to Reuse Unfinished Formula?

Emily Oster, PhD

A person using a breastpump.

Updated on Feb. 24, 2026

3 minute read

What’s the Best Breast Pump to Get?

Emily Oster, PhD

Parent kissing newborn

Updated on Feb. 18, 2026

2 minute read

Is It Safe to Kiss Newborns?

Emily Oster, PhD