Leaky Gut Expert: This Gut Mistake Leads To Cancer. The Cheap Spice That Helps Repair A Damaged Gut!
The Diary Of A CEO with Steven Bartlett
January 1, 2026
Tired of your health issues? Top gastroenterologist DR WILL BULSIEWICZ reveals NEW information about how leaky gut drives inflammation, cancer risk, bloating and brain fog, and the daily habits to heal FAST. Dr Will Bulsiewicz is one of the world’s leading experts on the gut microbiome.
Speakers Steven Bartlett, Will Bulsiewicz
TopicsBusinessSociety & Culture
Steven Bartlett (0:00)
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What's a fecal transplant?
Will Bulsiewicz (1:08)
You take a healthy person's poop and you transfer it into the person who's sick. For example, a patient of mine took an antibiotic which wipes out your gut, which became life-threatening. And so our choices were to remove the colon or give her a fecal transplant, and so I delivered the fecal transplant to her. By the next day, the entire infectious issue got shut down. So this is a great example to show how important our gut microbiome is, because 60% of the weight of your stool is your microbiome.
Steven Bartlett (1:34)
Really?
Will Bulsiewicz (1:35)
Yes, but it's not getting enough attention, and we need to talk about that.
SPEAKER_3 (1:38)
World-renowned gastroenterologist Dr. Will Bulsiewicz is back.
Will Bulsiewicz (1:42)
This time, he's sharing brand new information regarding the gut microbiome.
Steven Bartlett (1:46)
And how poo might actually be the key to your health. 60% of people that listen are currently struggling with some kind of gut problem.
Will Bulsiewicz (1:53)
And it manifests in these subtle ways, like bloating, increased fatigue, difficulty concentrating, you don't sleep well at night, skin issues. So it flies under the radar, but ultimately leads to other health-related problems afterwards.
Steven Bartlett (2:05)
So I've got so many questions. What's the cause of bloating?
Will Bulsiewicz (2:08)
So constipation is the number one cause, but people who are bloated, please don't sip through straws, drink carbonated drinks, chew on gum, because you just make it worse.
Steven Bartlett (2:17)
Next, are there decisions that you make as a parent that will have a lasting impact on their kid's gut function?
Will Bulsiewicz (2:22)
Yeah, by three years of age, you are basically fully adult-sized in terms of your microbiome. But antibiotics, bottle feeding, and birth by cesarean section are associated with an impact on the microbiome, such as an increased risk of allergic, autoimmune, and metabolic diseases. And I'll explain why.
Steven Bartlett (2:37)
And then, can I repair the gut?
Will Bulsiewicz (2:39)
Yeah, 100%. And every three to five days, you build a new gut barrier. And so I've identified four things missing in our diet, as well as a daily routine that can optimize our microbiome. And when you do these, you will thrive, and you will live longer, and you will have less disease. And I'm going to take you through all of these steps right now.
Steven Bartlett (2:56)
Just give me 30 seconds of your time. Two things I wanted to say. The first thing is a huge thank you for listening and tuning into the show week after week. It means the world to all of us, and this really is a dream that we absolutely never had and couldn't have imagined getting to this place. But secondly, it's a dream where we feel like we're only just getting started. And if you enjoy what we do here, please join the 24% of people that listen to this podcast regularly and follow us on this app. Here's a promise I'm going to make to you. I'm going to do everything in my power to make this show as good as I can, now and into the future. We're going to deliver the guests that you want me to speak to, and we're going to continue to keep doing all of the things you love about this show.
Dr. Will, before we started the recording, I asked you about this new book that you've written, and the way that you spoke about it was incredibly passionate. Why?
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