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Two pieces of yellow yarn are stretched across a blue background. The first piece is relatively straight, left to right. The second is tangled.

Jan. 13, 2023

2 minute read

I Had Pregnancy Complications the First Time. Will They Happen for the Second Pregnancy?

Emily Oster, PhD

A child playing on an outdoor jungle gym.

Updated on Feb. 5, 2025

3 minute read

How Common and Serious Are Playground Accidents?

Emily Oster, PhD

Flames from a gas burner are pictured close-up.

Updated on Mar. 30, 2025

9 minute read

How Worried Should We Be About Gas Stoves?

Emily Oster, PhD

A group of babies listening to ParentData on headphones

Jan. 8, 2023

29 minute read

Puberty, Postpartum, and Adaptation

Emily Oster, PhD

A teddy bear sits in a blue highchair eating oatmeal and an apple.

Jan. 6, 2023

3 minute read

Is My Toddler Overeating?

Emily Oster, PhD

A red manual blood pressure gauge and a plastic red heart are seen on a red background.

Updated on Dec. 12, 2024

5 minute read

How to Manage Severe Preeclampsia and Early Delivery

Nathan Fox, MD

A baby holding their breath with puffed-out cheeks and lips.

Updated on Aug. 13, 2025

2 minute read

Why Is My Baby Holding Her Breath?

Emily Oster, PhD

Gold balloons spell out "It's a girl" on a pink background.

Updated on Aug. 22, 2025

2 minute read

How Can I Conceive a Girl?

Emily Oster, PhD

A sleeping mother with her hand on her baby's stomach as he lays next to her in his bassinet.

Updated on Mar. 17, 2025

7 minute read

Is There a Best Method for Sleep Training?

Emily Oster, PhD

A pyramid of plain wooden block and one red one on a blue background.

Dec. 23, 2022

4 minute read

Should I Avoid Sending My Kid to Day Care During the Tripledemic?

Emily Oster, PhD

A pile of chocolate bars and nuts on a white background.

Updated on Feb. 5, 2025

3 minute read

Should I Worry About Exposure to Lead in Chocolate While Pregnant?

Emily Oster, PhD

A blue and white digital thermometer sits on a pink background.

Dec. 23, 2022

2 minute read

How Accurate Is My Thermometer?

Emily Oster, PhD

A person taking a cold plunge in freezing river.

Updated on Aug. 22, 2025

2 minute read

Is It Safe to Do Cold Plunges While TTC?

Emily Oster, PhD

A stash of filled breast milk freezer bags is seen with a hand on either side of the bag.

Updated on Apr. 14, 2025

12 minute read

How to Store Breast Milk

Emily Oster, PhD

Reusable coffee cups with purple silicone lids and sleeves on a yellow background.

Dec. 16, 2022

3 minute read

When Should I Let My Kids Drink Coffee?

Emily Oster, PhD

A person stands against a yellow wall and holds their breath while smiling.

Dec. 16, 2022

2 minute read

Is It Bad to Hold Your Breath During Pregnancy?

Emily Oster, PhD