Can gastric dumping syndrome occur in a person with no prior gastric bypass surgery?

Possible: Anything is possible in medicine. A gastroenterologist can give you more information.

Dumping: No, not really. There are a very small percentage of people that will get post prandial hypoglycemia, but that only gives you some of the symptoms of dumping. With dumping, you can also get diarrhea, a stomach ache, nausea. There are people that have these symptoms and who have irritable bowel syndrome, but this is different than dumping syndrome that people get after a bypass.