collected stool from Uyghur patients with T2DM to intervene with C57BM/6 mice and found that Uyghur T2DM fecal microbiota transplantation disrupted glucose metabolism by altering the ability of intestinal flora to metabolize BIS and the BAS/GLP-1 pathway (Wang et al., 2022). Here, GCG is linked to type 2 diabetes mellitus.