GIP is a hormone released in the upper digestive tract that triggers insulin release in response to glucose and fat.

“GIP again gab or dulce we had great discussions on this years ago but GIP is a hormone in your upper digestive tract and it's called glucose dependent insulin a tropic polypeptide so long word but basically glucose dependence so it's primarily a trigger that when glucose and sugar comes in your mouth and into your stomach their sweet sensor receptors in your stomach these sensors gyah a release GIP hormone in your upper intestine and basically when your insulin spikes up when you eat something sugary it's not actually the sugar or hitting your blood that releases most of the insulin it's GIP that streaks out and tells your pancreas to start releasing insulin before the sugar even he gets into your blood stream”