Replaceable You by Mary Roach

Replaceable You

Adventures in Human Anatomy

Mary Roach

WW Norton · Print & ebook · September 16, 2025

The body is the most complex machine in the world, and the only one for which you cannot get a replacement part from the manufacturer.

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Who it’s for
Medical ingenuity meets bodily oddities in Mary Roach’s witty tour of replacement parts.
Themes
Body-part replacement, Regenerative medicine, Questions raised by medical advances
Genres
Transplant Surgery, Health & Medicine Humor, Biotech

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About this book

The body is the most complex machine in the world, and the only one for which you cannot get a replacement part from the manufacturer. For centuries, medicine has reached for what’s available—sculpting noses from brass, borrowing skin from frogs and hearts from pigs, crafting eye parts from jet canopies and breasts from petroleum by-products. Today we’re attempting to grow body parts from scratch using stem cells and 3D printers. How are we doing? Are we there yet?

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In Replaceable You, Mary Roach explores the remarkable advances and difficult questions prompted by the human body’s failings. When and how does a person decide they’d be better off with a prosthetic than their existing limb? Can a donated heart be made to beat forever? Can an intestine provide a workable substitute for a vagina? Roach dives in with her characteristic verve and infectious wit. Her travels take her to the OR at a legendary burn unit in Boston, a “superclean” xeno-pigsty in China, and a stem cell “hair nursery” in the San Diego tech hub. She talks with researchers and surgeons, amputees and ostomates, printers of kidneys and designers of wearable organs. She spends time in a working iron lung from the 1950s, stays up all night with recovery techs as they disassemble and reassemble a tissue donor, and travels across Mongolia with the cataract surgeons of Orbis International. Irrepressible and accessible, Replaceable You immerses readers in the wondrous, improbable, and surreal quest to build a new you.

A Body Rebuilt

Medical ingenuity meets bodily oddities in Mary Roach’s witty tour of replacement parts.

Come here for

  • The strange ingenuity behind prosthetics, transplants, and lab-grown body parts
  • Science told with curiosity and a well-timed raised eyebrow

Expect

  • A lively, immersive look at medicine’s attempts to repair the body
  • Researchers, surgeons, patients, and the curious machinery of repair

Where it sits

Biotech47%
Health & Medicine Humor32%
Transplant Surgery30%

Percentages are BookFrontier’s reading of the book.

Publisher categories

  • Plastic & Cosmetic Surgery
  • Transplant Surgery
  • How the Human Body Works
Authors
Mary Roach
Publisher
WW Norton
Published
September 16, 2025
Format
Print & ebook
Theme
Body-part replacement · Regenerative medicine · Questions raised by medical advances
Reading lane
Plastic & Cosmetic Surgery