A recent study evaluating the clinical reaction of 17 T2DM patients to FMT showed significant improvement in T2DM symptoms in 11 patients, mainly manifested by statistically conspicuous diminish in hemoglobin A1c (HbA1c), fasting and postprandial glucose, uric acid, while postprandial C‐peptide (an indicator related to serum insulin) increased. Here, INS is linked to type 2 diabetes mellitus.