Microbes are an important component of the microbiology eco-system in the human gut, which is colonized by 1014 bacteria , ten times more than the human cells. Gut bacteria take an important role in human health, like supplying essential nutrients, synthesizing vit. K, aiding in the digestion of cellulose, and promoting angiogenesis and enteric nerve function. However, they can also be potentially harmful due to the change of their composition when the gut ecosystem undergoes abnormal changes in the light of the use of antibiotics, illness, stress, aging, bad dietary habits, and lifestyle. Dysbiosis of the gut bacteria communities can cause many chronic diseases, such as inflammatory bowel disease, obesity, cancer, and autism.
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