GIP was the first incretin discovered
Nonetheless, the underlying reasons for the inconsistencies in the reported associations between T2DM and levels of plasma DPP-4 activity (lower, unaltered, higher) have not been adequately explained, although one study did suggest that it might be related to the populations studied, with changes only becoming evident once moderate or severe hyperglycaemia becomes established (68)
Her weight began to creep up in her early 20s, and no matter how much she restricted herself, ate clean, and worked out, no matter how many times the scale shifted a few pounds here and there, the weight always came back in surplusand the debilitating preoccupation with food never stopped
Comer SD, Sullivan MA, Yu E, et al