Hello Welcome to health care magic. Diarrhea with abdominal cramps after eating sugar or dairy suggests lactose intolerance. Other possibilities are diverticulitis or chronic infection in intestines. It needs to be ruled out by stool analysis,USG abdo and breath test.You may consult gastroenterologist in that regard. Your detailed medical history will be required to rule out possibility of irritable bowel syndrome. Once lactose intolerance is ruled out,you can use probiotics in itself or like curd to help re-establish your intestinal flora. If you were on juices for long time,you must introduce the regular food gradually from semi solid to solid. Further specific management depends upon the diagnosis estanlished through above investigations Hope this infofmation helps. Any more query are welcome.