Also, it has been suggested that GIP could have a place as an adjunct treatment of type 2 diabetes (T2D) if added to insulin but concern has been raised because of its ability to increase fat deposition in adipose tissue and thereby body weight (Ussher and Drucker 2012; Campbell and Drucker 2013; Drucker 2013). Here, INS is linked to type 2 diabetes mellitus.