Asaf Kraus, founder and CEO of Dieta Health, suffers from irritable bowel syndrome (IBS), a dreadful, albeit non-fatal disease that is notoriously difficult to treat. In 2017, Kraus was employed as a data scientist for Uber when he participated in a clinical trial for experimental IBS treatment. As a participant in the trial he was required to peer at, remember, and subjectively classify his stool on the Bristol Scale, a tool gastroenterologists use to assess human stool, a.k.a poop, based on its shape and how formed or loose it is, to determine how effective an IBS treatment is for a particul…