The gut is ‘outside’ our body for a very important immunological reason. You see, our environment is naturally filled with billions of bacteria. This is not to scare you, as bacteria play a very important role in sustaining life on earth. However, our body is not equipped to let any ol’ bug from the outside world into our bloodstream.
Therefore, our gut contains a very sophisticated immune system to make sure that the bugs that we swallow and eat are not given free reign into our bloodstream. This is why bacteria and food are kept ‘outside’ our body and safely enclosed within your gut until deemed safe enough to pass through our gut’s immune defences and into our blood.