In dumping syndrome, particularly in its late phase, reactive hypoglycemia can emerge as a significant symptom. This condition is linked to the abnormally rapid passage of nutrients into the small intestine due to a dysfunction of the pyloric sphincter. The swift absorption of nutrients causes an abrupt rise in blood sugar (hyperglycemia). In response, the body secretes an excessive amount of insulin, which rapidly lowers blood sugar and leads to hypoglycemia. Consequently, post-meal blood sugar levels first rise quickly and then fall just as rapidly. Due to this metabolic response, a special nutritional program, similar to that for diabetes management, is generally recommended for patients with dumping syndrome.