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LESSON 5 · The Microbe Within

The Big Picture

Moving whole bacterial ecosystems is changing medicine:

  • Cure rates over 90 percent make transplants the standout option for recurring C. difficile.
  • Super donors with unusually diverse microbes get consistently better results.
  • Donor screening is stricter than blood donation, and few applicants pass.
  • New frontiers include obesity, depression, Parkinson's, autism, and cancer therapy.
  • The gut's reach extends to metabolism, mood, and behavior, not just digestion.