Dr. Will Bulsiewicz

Well, because it goes back to what you mentioned earlier, which is that 60% of the weight of our stool is actually microbial in origin. So if you want a window into your microbiome, look at your poop. You don't necessarily need to go and do an expensive test. Quite simply, looking at your poop is one of the ways that you can tell what's going on.

So there was a study that was done in the 90s, a long time ago, and it was less than 2,000 people exclusively in the city of Bristol. And it led to the creation of a chart called the Bristol Stuhl Scale. Right here, I'll put it on the screen. Yeah, and we're gonna run through this. But before we do, I wanna mention a few things real quick.

So there was a study that was done in the 90s, a long time ago, and it was less than 2,000 people exclusively in the city of Bristol. And it led to the creation of a chart called the Bristol Stuhl Scale. Right here, I'll put it on the screen. Yeah, and we're gonna run through this. But before we do, I wanna mention a few things real quick.

As the US Medical Director of Zoe, I'm proud of my contribution as a gastroenterologist, as a physician, to the work that we're doing there. And we not only did the blue poo study, which we've talked about already, which is that you can eat your muffins and figure out your gut transit time. But we also did a couple of other things. One is called the Blue Poo Challenge.

As the US Medical Director of Zoe, I'm proud of my contribution as a gastroenterologist, as a physician, to the work that we're doing there. And we not only did the blue poo study, which we've talked about already, which is that you can eat your muffins and figure out your gut transit time. But we also did a couple of other things. One is called the Blue Poo Challenge.

Where we had over 20,000 people across the planet who were basically eating blue muffins and then reporting back to us on what was going on with them. And then more recently, so again, the Bristol study was 2,000 people exclusively in the city of Bristol. We recently did the largest study across the entire UK on poop deaths. and what people were doing in terms of their bowel movements.

Where we had over 20,000 people across the planet who were basically eating blue muffins and then reporting back to us on what was going on with them. And then more recently, so again, the Bristol study was 2,000 people exclusively in the city of Bristol. We recently did the largest study across the entire UK on poop deaths. and what people were doing in terms of their bowel movements.

So it was called the Big Poo Review, and we had 142,000 people from across the UK basically fill out a 17-question survey. And part of what we were looking at was their Bristol stool form. We were also looking at how often they poop. By the way, the average person poops 1.7 times per day. And we were also looking at how it associates with different conditions.

So it was called the Big Poo Review, and we had 142,000 people from across the UK basically fill out a 17-question survey. And part of what we were looking at was their Bristol stool form. We were also looking at how often they poop. By the way, the average person poops 1.7 times per day. And we were also looking at how it associates with different conditions.

So as an example, one in five people in the UK are constipated. One in six people in the UK have diarrhea. So it's interesting to take a look at all these things. So now getting into the Bristol stool chart, the... The dream. That is real poop. It's lovely. This is the dream. This is where we all want to be. And this is a Bristol Four.

So as an example, one in five people in the UK are constipated. One in six people in the UK have diarrhea. So it's interesting to take a look at all these things. So now getting into the Bristol stool chart, the... The dream. That is real poop. It's lovely. This is the dream. This is where we all want to be. And this is a Bristol Four.

The Bristol Four is the classic where I come walking out of the bathroom in slow motion and rock music is jamming and doves are flying in slow motion. And I just am such a stud. So, and that's after a Bristol four. My wife knows what happens when I come out looking like that. It's soft and formed, okay? And it's like a sausage or a torpedo. So pretty smooth.

The Bristol Four is the classic where I come walking out of the bathroom in slow motion and rock music is jamming and doves are flying in slow motion. And I just am such a stud. So, and that's after a Bristol four. My wife knows what happens when I come out looking like that. It's soft and formed, okay? And it's like a sausage or a torpedo. So pretty smooth.

Now, when we move from a four to a three, a three is not that big of a deal, but it is getting some cracks and crevices in it, all right? So, and we're moving towards constipation. Now, a three, you know, a little more fiber, a little more hydration, some exercise, right? These are simple things that can help to get you back to a four if you're having one of these, a three.

Now, when we move from a four to a three, a three is not that big of a deal, but it is getting some cracks and crevices in it, all right? So, and we're moving towards constipation. Now, a three, you know, a little more fiber, a little more hydration, some exercise, right? These are simple things that can help to get you back to a four if you're having one of these, a three.

But that moves us to a Bristol two where we are truly getting into constipation territory here. And basically, this is like if you took a whole bunch of marbles of poop and jammed them together. So it still forms into something, but it looks like a pack of marbles of poop that are stuck together. So that's a Bristol two stool. That's constipation.

But that moves us to a Bristol two where we are truly getting into constipation territory here. And basically, this is like if you took a whole bunch of marbles of poop and jammed them together. So it still forms into something, but it looks like a pack of marbles of poop that are stuck together. So that's a Bristol two stool. That's constipation.

And then finally, a Bristol one is when you're having the rabbit pellets and they're hard. They're not easy to get out. And sometimes they're a lot bigger than this. These are small. So you would form this up into what would be like a golf ball. And that golf ball would be like a Bristol one.

And then finally, a Bristol one is when you're having the rabbit pellets and they're hard. They're not easy to get out. And sometimes they're a lot bigger than this. These are small. So you would form this up into what would be like a golf ball. And that golf ball would be like a Bristol one.

All right. You form it up into a hard ball like this, but perhaps even bigger. And it's actually hard for a person to pass this. It's so big. It's so hard that your bottom has a problem relaxing to let it out. Okay. So Bristol 1 and 2 are forms of constipation. Let's go back to the middle. We're going to start from 5. The stool is soft. It's not hard. It's not lumpy bumpy. It's soft.