According to the British Broadcasting Corporation ( the BBC ) reported that more than half of the composition of the human body, there are not human cells, but a non-human population of microbial cells. To be precise, there are more microbes in the human body than human cells. Max – Planck Institute ( at The Max Planck Institute researchers of microbial genomics), said the body of these microbes is essential for human health .
No matter how we clean our body every day, every corner of our body is still covered by microorganisms. They include bacteria, viruses, fungi, and archaea. These kinds of microorganisms mainly gather in the human intestines, because there are dark corners and lack of oxygen. Previously, scientists believed that there were more human cells than microorganisms deposited in the human body. Obviously, this is not the case. Professor Knight of the University of California,
San Dago said that if all the cells in the human body are included, it is estimated that only 43% are
related to humans .
From a genetic point of view, we are even more at a disadvantage. The human genome consists of about 2 ten thousand genes, but genes of the microbiota in the human body is about 200 Wan Dao 2000 between ten thousand. Sarkis, a microbiologist at the California Institute of Technology, believes that the microbiome in the human body is the second genome in our body. He believes that everyone is by its own DNA together with human microbial DNA combine. These microbiota interact with and affect the human body .
Various microorganisms play an important role in the human body. Modern science has discovered the role of microorganisms in the human body. They play an important role in various aspects, such as: helping digestion, mediating the human immune function, protecting the human body from disease attacks, and producing vitamins necessary for the human body . This discovery will allow us to revisit the microbes in the human body instead of treating them as enemies as before. In the past, humans invented antibiotics and vaccines to deal with smallpox, tuberculosis or the superbug MRSA, etc., saving countless lives. However, researchers worry that while killing bad bacteria, they also hurt a lot of good bacteria .
Studies have shown that microorganisms are associated with Parkinson’s disease, inflammatory bowel disease, depression, and autism . Dr. Laurie from The Wellcome Trust Sanger Institute conducted an experiment to cultivate the microbiota of healthy people and patients. Afterwards, he said that certain bacteria may be lacking in those patients. His idea is that we should regain those beneficial bacteria that have disappeared .
Human microbiome ( Human microbiome ), also known as normal flora ( Normal Flora ), is a type of bacteria that forms a symbiotic relationship with the host during the long-term evolutionary process, and is harmless to the host. They include bacteria, fungi, archaea and viruses .
These microflora mainly reside on the skin, external auditory canal, conjunctiva, nasopharyngeal cavity, urethra, intestine, digestive tract and vagina .
If the balance between the normal flora and the host, or between the various bacterial species of the normal flora, is broken, the flora will be imbalanced, the pathogenic effect will be significant, and severe cases will cause double infection. This situation is often caused by external factors such as long-term use of antibiotics and immunosuppressants .