Eating simple sugars (such as sugar, honey, and corn syrup) or high-fat foods can cause dumping syndrome in patients who have had gastric bypass surgery. This occurs when these products, which have a small particle size, are “dumped” from the stomach into the intestine at a rapid rate. Water is pulled into the intestine from the bloodstream to dilute the sugar load. This flush of water causes symptoms that can include diarrhea, rapid heart rate, hot flashes or sweating and clammy skin, and dizziness.