Some diarrhea causes, however, that the intestine is completely emptied. The biofilm with the beneficial bacteria is thus removed from large parts of the digestive tract, explain the scientists. In the appendix, however, the benign bacteria can hide more easily and thus outlast the diarrheal disease. When the remaining intestine is completely deflated, the bacteria emerge from their hiding place and spread throughout the digestive tract, explains Parker. This prevents them from settling on dangerous bacteria.
In countries with high hygienic standards, the protection by the bacteria of the worm appendage but probably superfluous, the researchers. Since significantly fewer people suffer from infections of the intestine, the beneficial bacteria of the worm appendage are used much less often. The immune system is also somewhat under-utilized, explains Parker. As a result, it tends to overreact and often cause inflammation of the appendix, the so-called appendicitis.Communication from Duke University, Durham Original work by researchers: William Parker (Duke University) et al .: Journal of Theoretical Biology, online pre-publication ddp / science.de? Anja Baster's ad