NOS2 and type 1 diabetes mellitus: As shown in Figure 5h,j, the expression of iNOS in UTMD group was significantly reduced compared with other treatment groups, and the Western blot assay were accordant with the results of the IH assay (Figures 5k,l, S7, and S8), indicating that the UTMD group effectively improved cavernous oxidative stress and protected erection‐related tissue structures, which is also consistent with the study that inhibition of iNOS improved ED in type 1 diabetic rats.28