Bifidobacteria are among the first colonizers of human gut, and certain species are recognised as Human-Residential Bifidobacteria (HRB) - the natural resident of human gut microbiota. Their early appearance and dominance in the infant gut confer lifelong health-promoting benefits. New research by Morinaga unveil the superior functions of HRB over Non-HRB (animal species). In particular, Morinaga HRB (BB536| M-16V| M-63) possess prominent clinical safety and efficacy on infant health. Together with their excellent stability profile, Morinaga HRB strains show great promise in infant nutrition.