The classics of Chinese medicine describe the digestive system in terms of what today we'd call a compost pile.
Indeed we symbiotically live with, and are dependent on, a population of microbes that outnumbers our "human" cells. 
 
Our modern day war on the bacterial world is perhaps a bit misguided. And rather than trying to assassinate a few bad bugs, it might be a better idea to cultivate a diverse population of other microbes that naturally work to keep the troublemakers in check.
  
Our guest in this episode takes us into the world of beneficial bacteria and how we can use food to eat our way into a better balance with our own personal microbial community.