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A parent holding and stretching the baby's legs

Updated on Apr. 25, 2025

2 minute read

What Is the Data Behind Growth Charts?

Emily Oster, PhD

A dentist showing kid's dental x-ray to the parent and kid

Updated on Sep. 23, 2025

2 minute read

Does My Child Need Routine Dental X-Rays?

Emily Oster, PhD

A child playing with a bottle of pills
In the news

Updated on Aug. 8, 2025

2 minute read

Does Vitamin A Prevent Measles?

Emily Oster, PhD

A parent talking to a toddler by the sofa.

Updated on Mar. 21, 2025

3 minute read

How Should I Respond When I Don’t Understand My Toddler?

Emily Oster, PhD

Updated on Aug. 6, 2025

1 minute read

Should You Worry About Your Toddler’s Potbelly?

Emily Oster, PhD

Colorful candies.
In the news

Updated on Aug. 8, 2025

10 minute read

Should You Be Concerned About Food Dyes?

Emily Oster, PhD

A baby sleeping in a crib with pillow and teddy.

Updated on Oct. 8, 2025

2 minute read

Is It Okay for My Toddler to Use a Pillow?

Emily Oster, PhD

A baby sucking the thumb

Updated on Feb. 28, 2025

2 minute read

Does Thumb-Sucking Prevent Allergies?

Emily Oster, PhD

A parent breastfeeding her baby on a couch

Updated on Feb. 21, 2025

2 minute read

Do Prolactin Levels Matter for Breastfeeding Success?

Emily Oster, PhD

Papercut family in hands

Updated on Aug. 18, 2025

8 minute read

Navigating Directed Donor Relationships

Marea Goodman, LM, CPM

Baby lying down with a phone

Updated on Sep. 23, 2025

6 minute read

Should You Worry About Electromagnetic and Radio-Frequency Fields?

Emily Oster, PhD

A platter of animal and plant proteins
In the news

Updated on Aug. 8, 2025

9 minute read

Does Everyone Really Need to Eat More Protein?

Emily Oster, PhD

Changing baby's diaper

Updated on Apr. 1, 2025

2 minute read

How Do I Know What “Normal” Poop Looks Like?

Emily Oster, PhD

A kid getting a vaccine shot
In the news

Updated on Aug. 8, 2025

16 minute read

How Can You Know If Vaccines Are Safe?

Emily Oster, PhD

A person holding a chicken in a lab wearing gloves

Updated on Jan. 29, 2025

8 minute read

What You Need to Know About Bird Flu

Emily Oster, PhD

A kid getting a bandaid after a vaccine shot
In the news

Updated on Sep. 5, 2025

17 minute read

Your Guide to Childhood Vaccinations Before Age 2

Emily Oster, PhD