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A baby sucks their thumb while sleeping on their back in a crib.

Updated on Oct. 7, 2025

12 minute read

The Data Behind Safe Sleep

Emily Oster, PhD

Frozen bags of breastmilk are arranged in a wicker basket on a table.

Updated on Sep. 30, 2025

2 minute read

Should I Use Donor Milk for My Baby?

Emily Oster, PhD

A queer couple playing with their baby.

Updated on Sep. 24, 2025

6 minute read

Is Co-Feeding Right for You?

Marea Goodman, LM, CPM

A person mixing formula in a bottle

Updated on Sep. 23, 2025

7 minute read

What Is Going On with Heavy Metals in Formula?

Emily Oster, PhD

Gloved hands touching a newborn baby in labor room

Updated on Sep. 23, 2025

8 minute read

Is Vaginal Seeding Worth Trying?

Emily Oster, PhD

Syringe and vaccine vial on a dark background
In the news

Updated on Sep. 20, 2025

7 minute read

What’s Happening to the MMRV, Hepatitis B, and COVID Vaccines?

Emily Oster, PhD

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

Updated on Sep. 11, 2025

11 minute read

How Does Day Care Impact Children?

Emily Oster, PhD

Magic mushroom in forest.

Updated on Sep. 10, 2025

2 minute read

Is it Safe to Breastfeed on Mushrooms?

Emily Oster, PhD

Updated on Sep. 2, 2025

7 minute read

Are Sleep Regressions Real?

Emily Oster, PhD

A box of used plastic baby bottles.

Updated on Aug. 28, 2025

2 minute read

Can I Reuse Plastic Bottles for My Next Baby?

Emily Oster, PhD

A manual breast pump filled with milk sits on a wooden table in front of a light blue wall.

Updated on Aug. 28, 2025

2 minute read

How Long Should I Breastfeed My Child?

Emily Oster, PhD

Baby wearing an amber necklace.

Updated on Aug. 28, 2025

2 minute read

Do Amber Necklaces Work for Teething Pain?

Emily Oster, PhD

A baby sticking his tongue out and pointing at it.

Updated on Aug. 26, 2025

3 minute read

Do Tongue Ties Impact Speech?

Jennifer Shonkoff

A baby wearing a diaper holds its feet in the air while laying on its back.

Updated on Aug. 25, 2025

4 minute read

Normal Baby Poop, Explained

Emily Oster, PhD

A parent lifting a baby from the bassinet.

Updated on Aug. 19, 2025

2 minute read

Is My Scent Waking Up My Hungry Baby?

Emily Oster, PhD

A baby cries while a breastfeeding woman suffering from mastitis cups her breast in pain.

Updated on Aug. 21, 2025

9 minute read

Mastitis and the Guidance to Treat It

Emily Oster, PhD