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Pink and blue latex baloons.

Updated on Nov. 7, 2025

4 minute read

What the Data Says About Predicting Baby’s Biological Sex

Emily Oster, PhD

A parent breastfeeding a newborn.

Updated on Nov. 5, 2025

3 minute read

How Do I Get My Baby to Latch?

Emily Oster, PhD

A parent playing with a newborn.

Updated on Nov. 6, 2025

8 minute read

What the Data Actually Says About Breastfeeding

Emily Oster, PhD

Pediatrician giving a baby a vaccination.
In the news

Updated on Nov. 6, 2025

3 minute read

Can I Vaccinate My Baby for Measles Early?

Emily Oster, PhD

kids sitting in a class room and using mobile
In the news

Updated on Nov. 6, 2025

11 minute read

What the Data Says About Kids, Phones, and Social Media

Emily Oster, PhD

A baby laughing with his mother.

Updated on Nov. 5, 2025

3 minute read

What’s the Best Way to Interact With My Baby?

Emily Oster, PhD

putting peanut butter on bread

Updated on Nov. 5, 2025

2 minute read

Does a Nut Allergy Increase Your Chances of Other Reactions?

Emily Oster, PhD

baby sitting with toys around

Updated on Nov. 5, 2025

3 minute read

Do Bilingual Children Speak Later?

Jennifer Shonkoff

Updated on Oct. 31, 2025

4 minute read

What’s the Data Behind Post-Egg Retrieval Guidelines?

Meggie Smith, MD

A couple holding hands in a doctor's office.

Updated on Oct. 31, 2025

3 minute read

Is There an Advantage to Waiting In Between Embryo Transfers?

Meggie Smith, MD

parent and a child sleeping together

Updated on Nov. 3, 2025

8 minute read

What to Know About Co-Sleeping

Emily Oster, PhD

Newborn's feet under blanket.

Updated on Oct. 30, 2025

8 minute read

All About Circumcision

Emily Oster, PhD

A fancy pink decorated egg illustrates the concept of "high-quality eggs" for fertility.

Updated on Oct. 31, 2025

3 minute read

Is It Possible to Improve My Egg Quality?

Breonna Slocum, MD

A doctor clamping the umblical cord of a newborn after delivery.

Updated on Oct. 29, 2025

2 minute read

How Should I Care for My Baby’s Umbilical Cord?

Emily Oster, PhD

Hair brush and comb

Updated on Oct. 29, 2025

2 minute read

What Can I Do About Postpartum Hair Loss?

Emily Oster, PhD

two kids posing and taking photograph of each other

Updated on Oct. 29, 2025

2 minute read

Should I Post Photos of My Child on Social Media?

Emily Oster, PhD