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 clusters 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 metabolizes nutrients and absorbs vitamins. It may also influence your response to certain diets.
While your enterotype is relatively stable, dietary changes—such as increasing fiber intake—can influence the proportions of different bacteria over time.
There is no “best” enterotype; each has strengths and weaknesses. For instance, Prevotella is good at processing carbohydrates, while Bacteroides are better at synthesizing certain vitamins.