INS and obesity due to melanocortin 4 receptor deficiency: For instance, the presence of Prevotella copri and Blastocystis species, which is regarded as uncommon in individuals with obesity, was found to be a strong indicator of more favorable postprandial glucose tolerance, insulin, C-peptide (all 0–2-h iAUC), TAG (0–6-h iAUC), and visceral fat mass.140