Dr. Will Bulsiewicz – Founder of 38TERA on Healing the Gut to Unlock Energy, Focus, and Longevity

The Casey Adams Show

Listener.com Podcast Network

Business, Entrepreneurship

4.8 • 637 Ratings

🗓️ 9 May 2025

⏱️ 51 minutes

🔗️ Recording | iTunes | RSS

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Summary

Today on The Casey Adams Show, I sit down with Dr. Will Bulsiewicz — renowned gastroenterologist, bestselling author of Fiber Fueled, and founder of 38TERA, a cutting-edge gut health supplement company. Known to millions as “Dr. B,” he shares how healing the gut can transform not just your digestion, but your energy, mental clarity, immune system, and overall quality of life.

In this conversation, Dr. B opens up about his personal health struggles, the science behind the gut microbiome, and how consistent dietary choices—not perfection—lead to lasting change. We dive into the creation of 38TERA, the future of microbiome-targeted supplements, and how new technology is unlocking a more personalized, data-driven approach to wellness. Whether you're looking to overcome food intolerances, optimize your performance, or simply feel your best — this episode is essential listening.

Connect with Dr. Will Bulsiewicz: https://www.instagram.com/theguthealthmd/

Learn more about 38TERA: https://38tera.com/

Chapters:

00:00 Introduction to Gut Health and Dr. Bulsiewicz
03:02 The Importance of Gut Health
06:01 The Microbiome: Command Center of Health
08:55 The Journey to Writing Fiber Fueled
12:01 The Birth of 38TERA
14:46 Creating a Transformative Product
18:09 Lessons Learned in Product Development
20:52 Consistency and Lasting Change in Gut Health
27:29 The Key to Gut Health: Coffee
42:09 Training the Gut: Overcoming Food Intolerances
47:12 The Future of Gut Health and Technology

Transcript

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0:00.0	Welcome back to the Casey Adams Show. Today I am joined by a very special guest, Dr. Will
0:07.8	Bolsowitz, the founder of 38 Terra, and a world-renowned gut health expert. Dr. B, thank you
0:14.9	so much for coming to the show today. Casey Adams, I'm very excited to be here. Thank you.
0:19.5	Of course, man. I've been super excited for this conversation. You know, I'm so intrigued by your just skill set and knowledge on all things gut health. And I don't want to butcher this word, this word, but, you know, you're known as a gastroenterologist. Is that, is that how you say? I want to make sure I'm punctual there. Yeah, no, you actually nailed it. You nailed my last name.
0:42.1	You're kind of on fire right now, so it's a beautiful thing. But like to, if people want to simplify
0:47.0	it a lot of times, people just call us to GI doctors. Yeah, got it. No, of course. No, and I appreciate that. We like to start these shows on fire. And for people
0:56.2	that may not know, you know, and I wanted to dive into not only like being the founder of 38
1:02.2	and what the company and the product is that you've created, but just starting at this super
1:06.5	high level of like, why is gut health important? And why should people even, you know, like,
1:12.1	care to learn about it? Because when I first started diving in myself, I think it just,
1:15.7	you know, your knowledge opened up my entire viewpoint of like why it's so impactful. And I already
1:20.5	sent, you know, an episode that you did with withdrawal to my parents and my brothers. And it's
1:25.0	so fascinating when you really start to understand like why it's so important in your everyday life. So we'd love to first ask you, like, what got you into this?
1:32.1	And why is gut health so important?
1:35.5	All right. Well, I guess let me start with the promise to your audience, which is that we're
1:40.0	talking about a topic that I think is applicable to every single person out there.
1:49.9	And the reason why is that gut health, whether you are doing incredibly well, very healthy,
1:54.3	or whether you are someone who's struggling with some sort of health-related issue right now,
1:59.6	the gut is so central to your health, it matters for all of us.
2:03.4	Healthy aging, reducing our risk of disease.
2:08.9	And when you actually are fighting with health related issues, the gut oftentimes offers an opportunity to improve those problems.
2:12.0	And we'll dig into that a little bit more.
	...

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