We all know that living under the same roof is the guarantee of sharing many experiences and also objects, debts and routines. However, what few know is that there is also the sharing of bacteria oral conversations between people who live in the same house. According to a recent study, at least a third of bacteria are shared. Understand better while reading.
How was the study
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The study was carried out by researchers at the University of Trento, Italy, who sought to ascertain the level of sharing of oral bacteria by people in the same household. For this, they analyzed previous surveys carried out in more than 20 different countries and that add up to a total of 10,000 samples of saliva and also feces.
Then, the scientists synthesized the conclusions in an article that came out in Nature Magazine, in which you can read more details of the results. According to the researchers, there is a predominance in the sharing of oral bacteria to the detriment of those coming from other parts. For example, people in the same household share about 12% of gut bacteria.
On the other hand, an average of 33% of oral bacteria are shared, therefore equivalent to one third of all oral bacteria that we have. This even works for people who live in the same house with different connections. After all, you'd expect spouses to share more oral bacteria from kissing, but even siblings share those bacteria.
The reason behind sharing
In the article, the scientists explain that what facilitates the transmission of oral bacteria is the fact that they can be transmitted through the air. After all, people sneeze in the same house and also talk constantly, which allows bacteria to be present in the environment. In addition, this is an important factor of disease contamination.
Another factor also manages to justify this sharing, which is the fact that people from the same house eat from the same foods. This means that they have the same source of contamination and that there is an environment conducive to the development of bacteria in that house.