Can gastro problems cause disturbance to blood sugar. insulin resistant & increased challenge to reg/stabilize bg levels- related?

Gi problems: In my experience gastrointestinal disorders per se rarely cause significant swings in blood sugar except in dumping syndrome where foods are abnormally and too swiftly emptied out of the stomach into the small intestine causing sweats and metabolic alterations. Gastroparesis where the stomach empties too slowly causes gastric upset rather than major swings in blood sugar. Other MD's may disagree.