Expecting Better: Why the Conventional Pregnancy Wisdom Is Wrong--and What You Really Need to Know (The ParentData Series)

Fully revised and updated for 2025, from the bestselling author of Cribsheet, The Family Firm, and The Unexpected

“A revelation for curious mothers-to-be whose doctors fail to lay out the pros and cons of that morning latte, let alone discuss real science.” —The New York Times

“Emily Oster is the non-judgmental girlfriend holding our hand and guiding us through pregnancy and motherhood. She has done the work to get us the hard facts in a soft, understandable way.” —Amy Schumer

The award-winning economist named one of TIME Magazine’s 100 most influential people disproves standard recommendations about pregnancy to empower women while they're expecting.

Pregnancy—unquestionably one of the most pro­found, meaningful experiences of adulthood—can reduce otherwise intelligent women to, well, babies. Pregnant women are told to avoid cold cuts, sushi, alcohol, and coffee without ever being told why these are forbidden. Rules for prenatal testing are similarly unexplained. Parents-to-be desperately want a resource that empowers them to make their own right choices.

When award-winning economist Emily Oster was a mom-to-be herself, she evaluated the data behind the accepted rules of pregnancy, and discovered that most are often misguided and some are just flat-out wrong. Debunking myths and explaining everything from the real effects of caffeine to the surprising dangers of gardening, Expecting Better is the book for every pregnant woman who wants to enjoy a healthy and relaxed pregnancy—and the occasional glass of wine.

Emily Oster is a professor of economics at Brown University and the author of Expecting Better, Cribsheet, The Family Firm, and The Unexpected. She writes the newsletter ParentData and her work has been featured in The New York Times, The Wall Street Journal, The Washington Post, The Atlantic, and Bloomberg.com. She has two children.