Classification of humans based on gut flora

An interesting article in Nature reported there are three main types of enterotypes found across part of the world.  Although the study was rather limited and only studied several countries, at least it is indicative of the increasing awareness that your gut flora is critical to good health and freedom from chronic diseases.  Total ingnorance of this issue is leading most teenagers to a sad future - most doctors are in the dark too!
  The number one cause of toxic gut?  Antibiotics and prescription drugs!!  Search for yourself - search on 'dysbiosis'.
  More on enterotypes as the science advances.
  Another related topic is clostridium diffcile or C DIFF.  It has been increasing at an alarming rate among both children and adults.  More on this as I have time to investigate.  MedNews  Doubled