Enterotypes are classifications of the human gut microbiome based on the dominant bacterial groups and their metabolic functions. There are three main enterotypes: Bacteroides-dominant (Type 1), Prevotella-dominant (Type 2), and Ruminococcus-dominant (Type 3). Each type has unique characteristics in how nutrients like fats, carbohydrates, and proteins are metabolized. For example, Prevotella (Type 2) is more efficient at carbohydrate utilization, especially in fiber-rich diets, but less capable of synthesizing certain vitamins. Your enterotype may influence nutrient absorption, gut health, and how your body responds to different types of diets.
An enterotype is a classification of the gut microbiome based on the dominant bacterial groups present in your intestines.
There are three main enterotypes: Type 1 (Bacteroides), Type 2 (Prevotella), and Type 3 (Ruminococcus).
Your enterotype affects how your body processes nutrients and absorbs vitamins. It may also impact your response to certain diets.
While your enterotype is relatively stable, dietary changes—such as increasing fiber intake—can affect the proportions of different bacteria over time.
There is no “best” enterotype; each has its strengths and weaknesses. For example, Prevotella excels at processing carbohydrates, while Bacteroides are better at synthesizing certain vitamins.