The My Baby Biome project, involving 412 infants across the US, found that over 75% of babies exhibit deficiencies in key gut bacteria associated with healthy microbiomes. These deficits correlate with heightened risks of developing allergies, asthma, and autoimmune disorders. The study highlights critical gaps in infant microbiome data and underlines the importance of early microbial composition in immune development. Persephone Biosciences, backing the research, aims to translate these insights into interventions to improve pediatric health outcomes.