Amine variations in faecal content in the first weeks of life of newborns in relation to breast-feeding or infant formulas.

Breast-feeding is the ideal nutrition for a newborn's integral necessities. It seems crucial therefore to know its composition in order to provide suitable infant formula when required. Of these, polyamines (with lactation and the microbiota being its intestinal source) are involved in the development of gut epithelium and immunity.