Curiosity Weekly Why Are People Getting Poop Transplants?
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May 13, 2026 
Dr. James Kinross, associate professor of surgery at Imperial College London and author on the gut microbiome, walks through fecal microbiota transplants and how they rebuild gut ecosystems. He explains procedure steps, donor screening and the rise of freeze-dried capsules. He also covers donor matching, which diseases have solid evidence, and future precision and AI-driven microbiome therapies.
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FMT Treats C. difficile And Is Widely Studied
- Fecal microbiota transplants (FMTs) are primarily used to treat gut infections, especially recurrent Clostridium difficile after antibiotics.
- Over 400 randomized trials explore FMT for many conditions because gut microbes influence diverse body functions.
Screen Donors And Use Anaerobic Processing
- Donors must be rigorously screened and samples processed anaerobically to preserve oxygen-sensitive microbes.
- Modern delivery includes freeze-dried encapsulated 'crapsules' that are tasteless and effective compared with slurry via tube or colonoscopy.
Microbiome Transplants Are Like Organ Transplants
- The gut microbiome is highly individualized and contains bacteria, viruses, fungi, and archaea that must engraft to work.
- Kinross likens FMT to an organ transplant: whole-community functions are hard to replicate with single strains.