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A baby sleeping in a weighed sleep sack.

Updated on Jan. 14, 2026

2 minute read

Are Weighted Sleep Sacks Safe?

Emily Oster, PhD

Pregnant person standing with one hand on a suitcase and one hand on belly with an airplane outside the window

Updated on Jan. 14, 2026

3 minute read

Is it Safe to Fly When Pregnant?

Emily Oster, PhD

an adult taking vitamin tablets

Updated on Jan. 13, 2026

4 minute read

Should I Take Folate or Folic Acid in My Prenatal Vitamins?

Emily Oster, PhD

A person sneezing in cold weather.

In the news

Updated on Jan. 9, 2026

8 minute read

Why Is This Flu Season So Bad?

Emily Oster, PhD

A woman breastfeeds her child while eating soup and looking at her laptop.

Updated on Jan. 11, 2026

10 minute read

Eating and Drinking While Breastfeeding

Emily Oster, PhD

A couple sleeping in bed.

Updated on Jan. 9, 2026

10 minute read

How to Time Sex for Pregnancy

Breonna Slocum, MD

Two parents, in bed with their child, who is coughing, take the child's temperature.

Updated on Jan. 9, 2026

7 minute read

When to Treat a Fever

Emily Oster, PhD

Doctor gives adolescent vaccine

In the news

Updated on Jan. 9, 2026

9 minute read

All About the HPV Vaccine

Emily Oster, PhD

A person coughing.

In the news

Updated on Jan. 9, 2026

6 minute read

Flu 101

Emily Oster, PhD

Child wrapped in blanket sitting on couch next to parent who is reading a thermometer

Updated on Jan. 8, 2026

11 minute read

What Fall Vaccines Should We Get?

Emily Oster, PhD

A baby about to take a vaccine shot.

In the news

Updated on Jan. 8, 2026

7 minute read

What Changed in the Childhood Vaccine Schedule?

Emily Oster, PhD

A person giving a bath to a newborn.

Updated on Jan. 8, 2026

5 minute read

All About Newborn Baths

Emily Oster, PhD

A pediatrician checking a baby.

Updated on Jan. 7, 2026

3 minute read

What Milestones Do Pediatricians Care About?

Kelly Fradin, MD

Breast milk frozen in storage bags.

Updated on Jan. 7, 2026

3 minute read

Should I Freeze-Dry My Breast Milk Stash?

Emily Oster, PhD

Parent holds a baby while breastfeeding.

Updated on Jan. 7, 2026

2 minute read

How Important Is Your Breastfeeding Hold?

Emily Oster, PhD

zoomed baby legs while holding by an adult

Updated on Jan. 7, 2026

9 minute read

What Is Hip Dysplasia?