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.