Leaky Gut, Leaky What? Leaky Gut Syndrome: What you need to know. About our Small Intestines To understand what leaky gut is, you need to understand a little about your small intestine.  The small intestine is home to 70-80% of our immune cells.  It also houses 100,000 neurons and therefore has a deep connection to your brain.  It has an immpresive 4,000 square feet of lining.  All of this lining is made up of one single cell.  Between these cells you have tight junctions (TJ’s).  These TJ’s have a very…