Natalia Mehlman Petrzela is a historian of contemporary American politics and culture. She is the author of CLASSROOM WARS: Language, Sex, and the Making of Modern Political Culture (Oxford University Press, 2015), and FIT NATION: The Gains and Pains of America’s Exercise Obsession (University of Chicago Press, 2023). She is co-producer and host of the acclaimed podcast WELCOME TO YOUR FANTASY, from Pineapple Street Studios/Gimlet and the co-host of PAST PRESENT podcast. She is a columnist for MSNBC Opinion, a frequent media guest expert, public speaker, and contributor to outlets including the New York Times, the Washington Post, CNN, and the Atlantic.

Natalia is a Carnegie Corporation Fellow and a recipient of a National Endowment for the Humanities Public Scholars Grant. She is currently working on two new books, a short history of the school culture wars, and a history of the Hamptons, with historian Neil J. Young. She is the host and executive producer of MUSCLE MEN, a new BBC podcast, and of a documentary series based on FIT NATION, in development with TIME Studios. Natalia began her career as a public school teacher, and she is currently Lead Historian on the Jewish American Hidden Voices curriculum for the New York City Department of Education, forthcoming in June 2025.

Natalia is Professor of History at The New School, co-founder of the wellness education program Healthclass 2.0, and a Premiere Leader of the mind-body practice intenSati. Her work has been supported by the Spencer, Whiting, Rockefeller, and Mellon Foundations, the Carnegie Corporation, and the National Endowment for the Humanities. She holds a B.A. from Columbia and a Ph.D. from Stanford and lives with her husband and two children in New York City.