Correct. The gut’s natural ability to MESSAGE the pancreas to release insulin after eating and for the liver to produce less sugar after eating is know as the Incretin Effect. This might be weakened in certain people with Type 2 Diabetes [Another arm of the ominous eight]

GLP-1 Receptor Agonists mimic this incretin effect signal while DDP-4 Inhibitors protect and extend the life of our own natural incretin hormones.