As Nature Made Him: The Boy Who Was Raised as a Girl is a biography of David Reimer, written by John Colapinto and published February 20, 2000, by Harper Perennial.

Reimer was a Canadian man born male but raised as a girl following medical advice and intervention after his penis was severely injured during a botched circumcision in infancy.

In 2001, the book was a finalist for the Lambda Literary Award for Nonfiction.

As Nature Made Him was a New York Times best seller.

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