Andrew Huberman· PhD
so there are three barriers in your intestine to keep the junk where it belongs in the center so that it can get pooped out the your behind all right three separate barriers one is a physical barrier called the muin layer so it's a layer of mucus that actually sits on top of the intestinal epithelial cells now that m muin is a polysaccharide and the bacteria can use that mucin layer for its own purposes it will eat your mucin layer if you don't feed your bacteria you must feed your bacteria or your bacteria will feed on you okay so you are in concert with your microbiome if you deprive your microbiome of the food that it needs it will use you as its food and that's one of the reasons why fiber is so important so fiber to build up this muin layer is one way to reinforce the the uh the fence that that is the tight junctions Etc exct um between your intestine and the bloodstream exactly