Remarkably, however, all of humanity appears to cluster toward one of two broad categories called enterotypes.2089 Enterotypes are not like blood types, which put us distinctly into specific immutable categories.2090 Instead, our gut flora exist in more of a continuous gradient with tendencies to drift one way or another. And when it comes to our gut flora, there are apparently two types of people in the world: those who grow mostly Bacteroides species and those who grow mostly Prevotella.
