FTH1 and type 2 diabetes mellitus: To evaluate whether FTH1 knockdown can reduce ferroptosis in T3SS‐induced intestinal epithelial cells of T2D‐AS mice, we knocked down the expression of FTH1 in colonic epithelial cells of 8‐week‐old mice by gavage with an adeno‐associated virus (AAV) vector encoding siFTH1.