The gut bacteria are known to play a crucial role in keeping us healthy. Research has shown that the trillions of friendly microorganisms hosted by our guts can keep us lean, young, and healthy — both in body and mind.
But how do gut bacteria do this? One answer involves the immune system. Various studies have been slowly unraveling the complex relationship between gut bacteria and immunity. They suggest that the interactions between the host’s gut and the bacteria that colonize our intestines help control how our body responds to illness.