Probiotics tailored to the infant: a window of opportunity

- Initial neonatal gut colonization is a crucial stage for infant health.
- Breast milk provides gut-associated anaerobic commensal bacteria.
- Optimal colonization of the infant gut is characterized by balanced metabolic activities of gut microbiota.
- Fecal lactate concentrations may be considered an important marker of metabolic dysbiosis.
- Breast milk may be a valuable source of tailored probiotic bacteria for infant formula.