So we just finished explaining how the gut is our second brain. How to top that? How about this: Your gut is its own planet.The human intestine hosts an entire civilization of microorganisms – about 100 trillion by most estimates. That’s many times more than there are cells in your body.
In researching the human gut over the last few weeks, I’ve learned at least 10 things that have blown my mind. Here is one: Your intestines are your second brain.The gut has its own nervous system – called the enteric nervous system – that is highly sophisticated and can basically think for itself.