Gut bacteria appeared from 11,000 years ago?

Helicobacter pylori bacterium specializes in human intestinal harassment (Photo: hunter.cuny.edu)

Science discovered the bacterium Helicobacter pylori that specializes in human intestinal harassment in 1981, but according to the US team, led by microbiologist Martin Blaser, it has actually appeared for a long time.

The team analyzed genetic samples of Helicobacter pylori in the gut of colonial groups in East Asia, Europe and American Indians. They found that the bacteria living in the gut of Asian and Native American Indians have nearly identical genomes, but there are many differences compared to the genomes of the bacteria living in European gut.

Analyzes of intestinal bacteria in mummies in China 2,000 years ago also show that they are no different from the bacteria in the intestines of East Asian people today.

Mr. Martin Blaser commented: Helicobacter pylori bacteria may appear first in Asia, then spread to Europe. The discovery of this bacterium in the gut of fairly isolated people in the Americas shows that at least 11,000 years ago (when Asians migrated to the Americas), the bacterium found a way. parasites in humans. Under certain conditions, it can attack the intestinal wall, causing minor illnesses such as abdominal pain, digestive disorders, abdominal pain, diarrhea .

NGUYEN SINH