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A person smoking outside.
In the news

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

Plastic glasses with a nose, mustache, and funny eyebrows attached.

Updated on Nov. 26, 2025

2 minute read

What Can I Do About My Child’s Stranger Anxiety?

Emily Oster, PhD

A toddler finishing milk from his bottle while the parent is trying to take it.

Updated on Nov. 26, 2025

3 minute read

What Should I Do If My Toddler Refuses to Give Up Bottles?

Emily Oster, PhD

lady breastfeeding a child

Updated on Nov. 26, 2025

2 minute read

Does Breastfeeding Reduce My Chances of Conceiving?

Emily Oster, PhD

Baby in parent's arms having a bottle

Updated on Nov. 26, 2025

3 minute read

Should I Give My Six Month Old Cow’s Milk Instead of Formula?

Emily Oster, PhD

A baby in a car seat.

Updated on Nov. 26, 2025

3 minute read

How Long Can My Baby Spend in a Car Seat?

Emily Oster, PhD

A parent trying to feed the baby with the feeder

Updated on Nov. 26, 2025

2 minute read

How Can I Get My Baby to Take a Bottle?

Emily Oster, PhD

a parent holding a baby and the nurse is injecting a vaccine to the baby

Updated on Nov. 26, 2025

2 minute read

Should I Space Out My Baby’s Vaccines?

Emily Oster, PhD

A nurse checking the blood pressure of a pregnant person.

Updated on Nov. 24, 2025

8 minute read

All About Preeclampsia

Emily Oster, PhD

Two moms having fun with a son.

Updated on Nov. 24, 2025

3 minute read

What Does the Research Say About Two Moms Raising a Son?

Marea Goodman, LM, CPM

Infant in a striped onesie does a plank position on a wood floor.

Updated on Nov. 24, 2025

5 minute read

Is Crawling Important?

Emily Oster, PhD