Defiant Health Radio with Dr. William Davis Here's a microbe you should know about: Bacillus subtilis
Sep 3, 2025
Discover the incredible benefits of Bacillus subtilis in gut health! The discussion dives into how this microbe excels at combating small intestinal bacterial overgrowth (SIBO) by producing powerful bacteriocins. Learn about its historical significance and why it outshines Bacillus coagulans in promoting gastrointestinal wellness. This episode highlights how harnessing the power of Bacillus subtilis can help reclaim control over your digestive health.
AI Snips
Chapters
Books
Transcript
Episode notes
B. subtilis Germinates And Produces Bacteriocins
- Bacillus subtilis was chosen for its ability to germinate in the small intestine and produce multiple bacteriocins.
- William Davis argues this makes it effective against fecal microbes driving SIBO-related problems.
Soil Microbe Also A Gut Resident
- Bacillus subtilis is historically a soil microbe but is also a normal inhabitant of the human gut.
- William Davis suggests humans likely acquired it from roots and tubers and it can inhabit our gastrointestinal tract.
Pick Microbes That Work In The Small Intestine
- Target microbes that can survive stomach acid and act in the small intestine to fight SIBO.
- Choose strains that adhere or germinate there and produce bacteriocins to suppress fecal microbes.
