Speaker 2
Now, the the other end of this, the other a kind of food intake question that i see a lota pertains to meat. So you had taugkt mesly about vegan diets and how that might affect the microbium. So d it sounds like fibre, there's some association there, but maybe not as big as people have hiped it up to be. What about meat? Is there is it? Is meat intake associated with any particularly good or bad effects on the microbium? Oh,
Speaker 1
i think this depends also on, youknow, if we're looking at just kind of a prudent diet. Because a lot of the studies thus far tha been looking at dietary effects on the microbium are using dietary extremes. So we're comparing am vigans to omnivors, or even vegans to an all am meat and cheese diet. So this was something that was done several years ago. They put om for five days. They had two groups. One was a plant base diet, one was an animal base, meat and cheese diet. A now, the folks that's transition to the base diet, it probably wasn't too terribly different from their base line diet, so they really didn't see any meaningful changes in the microbio. Whereas individuals who shifted to the meat and cheese diet saw some significant changes from base line. Once they returned to their previous diet, then their microbims bounced back toto their previous states as well. So what we
Speaker 3
often s mis we do seea fairly
Speaker 1
consistently increases in bacteroids. That doesn't necessarily mean that they are only associated with more meet more animal proteins, but they seem to be a pretty dynamic taxa, so they can adapt to changes in nutrient availability, whereas abipto bacteria seem to be a little bit morethe bit finicky,
Speaker 4
a little bit needy
Speaker 1
of um, fermentable carbohydrate. So when we reduce the levels of fermentable carbohydrates in the diet, like if were in a a low fod map diet or a gluten free diet, then we do see a fairly consistently reductions in levels of biffito bacteria. So what sometimes happens is that when we're comparing diets, andw when we compare higher protein to protein diet a, that it's not just necessarily the protein that's changing, or, you know, f we're looking at just, you know, cross sectional, like looking at two groups that have always eaten this type of diet, a, that we also have to keep in mind that the other macronutrient levels will change as well. So there are some, a, there's some studies that have shown with regress regression analyses that a increased protein in take may might lead to reduced, a microbial diversity. And then others that have shown that it's associated with increased microbial diversity, but again, that's just looking at protein. We don't know what the sources of the protein might actually be. There. There's one, there's a recent analysis that came out looking at, you know, comparing degans versus vegetarians versus omnibors. And they actually noted that in vegans who sometimes ate a red meat, which i thought was really funny. Ah, they had similar, know, positive health outcomes to people who were strict vegan. So does you noic is including meat in any way problematic? No, but i would venture to a guess that if we have a diet that is only animal meat, that could be problematic, not necessarily just because of the meat, but e othe lack of fibre and microb accessible carbohydrates.