> ## Content Index
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# Dr. Will Bulsiewicz
- URL: https://www.cascadepbs.org/show/school-greatness-lewis-howes/episode/dr-will-bulsiewicz-ztuluo/
- Published: 2025-11-14T19:01:17.000Z
- Updated: 2026-04-02T07:31:33.000Z
- Description: Dr. B explains the critical connection between gut health and mental health.
- Author: Cascade PBS Staff
- Tags: The School of Greatness with Lewis Howes, Season 5, Episode 510, #ZZZ_Episode_fd728fc4-4478-4a75-b03f-306fcd34b95a, #episode, #ZZZ_Show_1d42f3ec-e367-4ab6-be68-0c0e72f4b3a6, #v1.16

Dr. Will Bulsiewicz is a renowned gastroenterologist, gut health expert, and best-selling author known for his work in making gut health education accessible. Dr. B explains the critical connection between gut health and mental health, noting that our intestines are home to 38 trillion microorganisms that significantly influence our immunity, mood, and overall well-being.