After eating for a while you tend to start feel full and you do not want to eat more. But researchers, through a new study, have found it is not your inner feeling of being full rather it is your gut bacteria that signals brain that it has had enough nutrients to reach their goal.

According to study researchers, almost after 20 minutes of continuous eating, E. coli bacteria, which are commonly found in human gut, starts producing proteins that scientists say are connected to a hormone responsible to suppress hunger.

This is the first study that has found the mechanisms that connect microbial activity to responses in the human body associated with behavior. Experts said that a single human body hosts more microbes than people on earth. Almost 100 trillion bacteria, viruses and fungi live in and on surface of every single body, from your eyelids to your intestines, they said.

The place in the human body which hosts the highest number of microbial organism is the digestive system. Almost 70% of all the body's microbes are found in the colon alone.

Scientists think it might be beneficial for the gut bacteria to signal their host to manage their good intake. Sergueï O. Fetissov, of Rouen University in France and co-author of the study, found that 20 minutes after eating the E. coli bacteria produced about twice as much of the ClpB protein as they did before they fed.

They also noted that these proteins reduced food intake when it was injected into mice and rats.