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enterotype An enterotype is a classification of living organisms based on its bacteriological ecosystem in the gut microbiome. The discovery of three human enterotypes was announced in the April 2011 issue of ''Nature'' by Peer Bork and his associates. They found that enterotypes are not dictated by age, gender, body weight, or national divisions. There are indications that long-term diet influences enterotype. Chimpanzees have enterotypes that are compositionally analogous to those found in humans. Using longitudinal samples, researchers found that the enterotype of individual chimpanzees varied over time. Type 1 is characterized by high levels of Bacteroides, type 2 has few Bacteroides but Prevotella are common, and type 3 has high levels of Ruminococcus.〔 In a study of gut bacteria of children in Burkina Faso (in Africa), ''Prevotella'' made up 53% of the gut bacteria, but were absent in age-matched European children. Studies also indicate that long-term diet is strongly associated with the gut microbiome composition—those who eat plenty of protein and animal fats typical of Western diet have predominantly ''Bacteroides'' bacteria, while for those who consume more carbohydrates, especially fibre, the ''Prevotella'' species dominate. ==References==
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