Breastmilk Protein Osteopontin Boosts Baby Immunity, Mouse Study Finds
An international study published in Cell links osteopontin, a protein high in early breastmilk, to shaping the gut microbiome and its metabolites in newborn mice, which in turn enhances immune development and reduces respiratory infection risk; researchers also showed a diabetes drug can mimic osteopontin’s immune-boosting effects, suggesting potential avenues to improve infant formula. Human studies are needed, but the work underscores breastfeeding’s value and the need for robust support for new mothers.