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Mary Roach: You’re More Replaceable Than You Know

Sep 15, 2025
Mary Roach, a renowned science writer and author of "Replaceable You: Adventures in Human Anatomy," discusses the fascinating and often quirky world of body replacement. She explores innovative advancements like prosthetics, printable organs, and gene-edited pig kidneys. Roach shares intriguing stories from history, including the peculiar practice of brides choosing dentures over natural teeth. The podcast delves into the emotional complexities of bodily replacements and the ethical implications of cutting-edge technologies like xenotransplantation and CRISPR.
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ANECDOTE

Elective Amputation For Better Life

  • Judy sought an elective amputation of a healthy but nonfunctional foot after being denied by many surgeons.
  • She eventually had it amputated and reported much greater mobility and happiness.
INSIGHT

Prosthetics Are Becoming More Natural

  • Modern prosthetics are advancing with sensors, microprocessors, and osseointegration to restore more natural movement.
  • Osseointegration promises direct bone attachment and sensory feedback but infection risk remains a barrier.
ADVICE

Weigh Practical Limits Of High-Tech Prosthetics

  • Consider cost, weight, and practicality before choosing high-tech prosthetics.
  • Mary Roach warns many cyber-looking limbs are heavy, battery-powered, and often not covered by insurance.
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