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A diet coke in a glass with ice cubes.

Updated on Dec. 4, 2025

7 minute read

How Bad Is Diet Coke for You, Really?

Emily Oster, PhD

A parent looks on as a pediatrician gives a smiling baby a vaccination.
In the news

Updated on Dec. 5, 2025

2 minute read

Should My Baby Get 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

Kids jumping in an indoor trampoline park.

Updated on Dec. 3, 2025

2 minute read

Are Trampoline Parks Risky?

Emily Oster, PhD

fruits and capsules placed on a table

Updated on Dec. 2, 2025

2 minute read

Can You Still Take Prenatal Vitamins After Pregnancy?

Emily Oster, PhD

A toddler grabs and stands by a christmas tree

Updated on Dec. 2, 2025

1 minute read

Is It Safe for My Newborn to Be Near Christmas Trees?

Emily Oster, PhD

A baby sleep stretched across a white pillow.

Updated on Dec. 2, 2025

2 minute read

Should I Wake My Baby to Feed Them?

Emily Oster, PhD

baby sitting on couch and drinking water through a feeder

Updated on Dec. 2, 2025

2 minute read

When Can Babies Drink Water?

Emily Oster, PhD

An elf sitting on a christmas tree

Updated on Dec. 2, 2025

8 minute read

The Real Reason Why “Elf on the Shelf” Doesn’t Work

Emily Oster, PhD

A child sits on a couch playing with an ipad that she won't hand over to her parent.

Updated on Dec. 2, 2025

7 minute read

What to Do When What’s Best Is Impossible

Emily Oster, PhD

A person smoking outside.

Updated on Dec. 2, 2025

8 minute read

Is Your Substance Use Affecting Your Sperm?

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

A person holding small male and female cut-outs in front of her stomach.

Updated on Dec. 1, 2025

3 minute read

Can I Choose the Sex of My Baby?

Breonna Slocum, MD

An hourglass filled with blue sand sits on a pink pedestal on a blue table. Most of the sand has fallen to the bottom chamber of the hourglass.

Updated on Dec. 1, 2025

3 minute read

How Long Should I Wait Before Having Another Kid?

Emily Oster, PhD

A robot puppy.
In the news

Updated on Nov. 26, 2025

9 minute read

Are AI Toys Safe for Children?

Dana L. Suskind, MD

A toddler napping.

Updated on Nov. 26, 2025

1 minute read

How Do I Prepare for Fewer Naps?

Emily Oster, PhD