Bacteria in the gut until now only been associated with digestive function. But the latest research reveals that these bacteria may control the functions of the human body more than expected.
In a recent research published in the journal Nature, scientists found a link between gut bacteria with multiple sclerosis disease in mice. The study also found that intestinal bacteria associated with obesity, depression, and various other health problems.
Research conducted in humans also confirm suspicions of the function of intestinal bacteria that are very large.
"What's been found in humans associated with obesity is the number and types of different bacteria. The amount is much less in people who are obese compared with healthy people," said Rob Knight from the University of Colorado.
The researchers also saw differences between bacteria that obese mice. In obese mice, the microbes in their intestines to absorb more calories from food than normal weight mice.
Surprisingly, removal of intestinal microbes from obese mice into other mice caused the mice are initially normal-weight into eating more.
"Microbes that extract energy from food so that stomach constantly hungry. As we all know there are more microbes in the cell body than in brain cells. Perhaps these bacteria in the gut influences the choice of food ordered in restaurants," said Knight.
When bacteria in the intestines of rats can instruct the brain to eat more, if there are other effects on the brain? The researchers said it might be.
"We are now beginning to examine is there any direct link between the intestinal bacterial community behavior," he said.
In an experiment revealed that rats have no intestinal bacteria showed differences in the way they move and experiencing anxiety. Mice treated with probiotic bacteria Lactobasilus also showed different gene expression in the brain so that the levels of stress hormones and their anxiety is reduced.
Another influence of intestinal bacteria were also found in diseases that seem unrelated to the digestive system, diseases such as multiple sclerosis (MS). Those who grew up in an environment free of bacteria show no symptoms. Once exposed to intestinal bacteria, disease symptoms appeared.
But of course, impossible for human beings can be free of bacteria. Even so the results of this study indicate that the intestinal bacterial community also plays a role in MS disease. Scientists are now trying to investigate the specific bacteria that cause the onset of MS symptoms.
In the meantime, given the important function of bacteria in the gut the researchers suggest that we keep the community. This can be achieved by eating probiotics, mengasup certain foods, as well as minimize the use of antibiotics.
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