INS and gestational diabetes: This finding is in line with previous findings of both meconium and stools during first week of life in offspring of mothers with GDM compared to offspring of mothers without GDM (Su et al., 2018; Ponzo et al., 2019) and with results in adults showing a positive association between high richness and a metabolically advantageous phenotype characterized by less body-fat and lower BMI, higher insulin sensitivity, lower levels of circulating triglycerides and higher levels of HDL cholesterol, and lower levels of circulating markers of low-grade inflammation (Chatelier et al., 2013).