Brown University economist and author who applies rigorous data analysis to everyday decisions around parenting, pregnancy, pediatric health, and education. Oster has written three popular books — including 'Expecting Better' and 'Cribsheet' — that challenge conventional parenting advice with statistical evidence, often overturning widely repeated claims that lack strong empirical support. Her ParentData newsletter on Substack extends that work with ongoing analysis of research studies, public health guidance, and policy affecting families. She became particularly prominent during the COVID-19 pandemic for her data-driven analysis of school reopening and child transmission risks.

How Much Caffeine Is Safe During Pregnancy?
May 22, 2026
How Much Caffeine Is Safe During Pregnancy?
May 22, 2026

A Popular Drug for Male Hair Loss Can Impact Pregnancy
May 17, 2026
A Popular Drug for Male Hair Loss Can Impact Pregnancy
May 17, 2026

How to Fix Your Child’s Sleep Issues (It Won’t Happen Overnight)
May 10, 2026
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