Emily Oster
FollowThe latest interviews, podcast appearances, and blog posts from Emily Oster, updated daily.
Everyone Is Talking About Male Testosterone
Do low testosterone symptoms worsen with age? Evidence on normal testosterone levels by age, whether decline is real, and what supplementation actually does.
Are Peanut Allergies Going Away?
Peanut allergy rates in U. S. children dropped 35% after early allergen introduction guidelines changed in 2015. Here’s what the data shows and why it matters.
What “Trimester Zero” Should Teach Us Instead
Trimester Zero promises fertility optimization, but most of it is expensive hype. Here’s what pre-conception health actually requires — and what to skip.
What the Data Says About Preschool and Pre-K
Are preschool and pre-K worth it? Learn what the research says, how Montessori, Waldorf, and Reggio compare, and how to choose the right preschool for your child.
How to Choose a School for Your Child
Not sure how to choose a school for your child? Use this 4-step framework to evaluate options, read the data, and make a confident decision without the panic.
There Have Been Two Botulism Outbreaks in Infant Formula. Why?
Two infant botulism formula recalls explained: what parents need to know about ByHeart, Nara Organics, powdered formula safety, and how to switch brands safely.
Nara Organics Has Recalled All Of Its Infant Formula
Nara Organics infant formula has been recalled amid an infantile botulism outbreak. Learn symptoms to watch for and exactly what parents should do now.
Are Day Care Naps Ruining Bedtime? Here’s What To Do.
Daycare naps pushing back bedtime for your 3-to-5-year-old? Learn what research says, your state’s nap policy, and how to talk to your provider.
The Data on Home Birth
Weighing home birth risks and benefits? Learn what the data says about planned home birth vs. hospital birth, transfer rates, and why your provider matters.
Does My Newborn Need Treatment for Jaundice?
Learn what the data says about newborn jaundice, how dangerous it really is, and what treatments are available for your baby.