In an average life time, around 60 tonnes of food pass through the human GI tract( gastrointestinal tract). The development of the microbiota is generally believed to begin from birth. After birth GI tract rapidly colonised.

In an average life time, around 60 tonnes of food pass through the human GI tract( gastrointestinal tract). The development of the microbiota is generally believed to begin from birth. After birth GI tract rapidly colonised.