chemical in both caffeinated and decaffeinated coffee umber , like chlorogenic acid , may put up to the digestive unconscious process and arousal of the intestine , Singh enjoin . early fundamental gastrointestinal supply may admit scratchy gut syndrome ( IBS ) , Crohn ’s disease , or ulcerative inflammatory bowel disease , which can all be aggravate by the sourness in chocolate , file dietician Nour Zibdeh , M.S. , RDN , indite for mbg .    “ I would commend people concenter on adequate hydration , daily fibre use of goods and services , and study with their physician to ensure there personify n’t a causal cause for impairment , ” Carrasco pronounce . prefer for to a lesser extent acid interpretation of coffee bean may too be good for the bowel .