In the "vicious cycle" portion of the above question, starting at about 30 min and 15 sec into the video he refers to his working hypothesis that the cycle can start at any point. Seems to me to be very similar to what is described by Elaine Gottschall (the inventor of the scd diet) in her book "Breaking The Vicious Cycle".
-------------------- ibs-d (pseudo)with pain and bloating