The Lost Family delves into the many lives that have been irrevocably changed by home DNA tests—a technology that represents the end of family secrets. There are the adoptees who’ve used the tests to find their birth parents; donor-conceived adults who suddenly discover they have more than fifty siblings; hundreds of thousands of Americans who discover their fathers aren’t biologically related to them, a phenomenon so common it is known as a “non-paternity event”; and individuals who are left to grapple with their conceptions of race and ethnicity when their true ancestral histories are discovered. Throughout these accounts, Copeland explores the impulse toward genetic essentialism and raises the question of how much our genes should get to tell us about who we are. With more than thirty million people having undergone home DNA testing, the answer to that question is more important than ever.

By Libby Copeland

Published: 2020

hardcover, 304 pages