GCG and type 2 diabetes mellitus: A total of 15 studies evaluated the association of incretin‐based therapies on cognitive function in patients with type 2 diabetes mellitus17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 31, 32, 33, 34, with eight included in our meta‐analysis.17, 18, 20, 21, 22, 23, 26, 27