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A baby lying on her tummy and smiling.

Updated on Dec. 20, 2025

1 minute read

When Do Babies Start Smiling?

Emily Oster, PhD

A person giving a bath to a newborn.

Updated on Dec. 19, 2025

5 minute read

All About Newborn Baths

Emily Oster, PhD

A doctor checking a new born.

Updated on Dec. 20, 2025

9 minute read

What to Expect at Your Baby’s Well Visits (0 to 18 Months)

Adam Davis, MD

A baby crying

Updated on Dec. 17, 2025

2 minute read

What Is the Witching Hour, and How Do I Manage It?

Emily Oster, PhD

A person after getting a vaccine shot.

Updated on Dec. 15, 2025

2 minute read

Should I Wait to Try and Conceive After My COVID-19 Booster?

Emily Oster, PhD

A healthy sperm injected into a egg.

Updated on Dec. 15, 2025

4 minute read

What Are the Risks of ICSI?

Breonna Slocum, MD

A parent in a kitchen looking stressed with a baby.

Updated on Dec. 12, 2025

13 minute read

Why Parenting Feels Harder Than Ever

Corinne Low, PhD

A Pharmacy sign.

Updated on Dec. 13, 2025

9 minute read

Living With Long COVID

Marisa Renee Lee

An infant swaddled by a parent.

Updated on Dec. 10, 2025

2 minute read

What Does the Data Say About Getting Infants to Sleep?

Emily Oster, PhD

A woman in labor holding a nurse in pain.

Updated on Dec. 12, 2025

7 minute read

What to Know About Vaginal Tearing in Childbirth

Emily Oster, PhD

Bottles of breastmilk and formula.

Updated on Dec. 10, 2025

10 minute read

All About Combo Feeding

Emily Oster, PhD

A woman exercising.

Updated on Dec. 4, 2025

4 minute read

Exercising While Trying to Conceive

Emily Oster, PhD

A diet coke in a glass with ice cubes.
In the news

Updated on Dec. 4, 2025

7 minute read

How Bad Is Diet Coke for You, Really?

Emily Oster, PhD

In the news

Updated on Dec. 5, 2025

6 minute read

What’s Happening with the Hepatitis B Vaccine?

Emily Oster, PhD

A toddler trying to empty a jar.

Updated on Dec. 2, 2025

3 minute read

What Are Ways to Manage My Child Testing Limits?

Emily Oster, PhD

A couple having a pillow fight in bed.

Updated on Dec. 1, 2025

3 minute read

What’s the Data Behind Waiting a Year to Check Fertility?

Emily Oster, PhD