Why does the probiotic B. lactis support the concept of “strengthening natural defenses” better than a prebiotic?

A probiotic directly influences the microbiota and the mucosal barrier to strengthen the natural defenses. A prebiotic indirectly impacts the natural defenses by supporting the growth of the microbiota. The probiotic B. lactis in Nestlé CERELAC® is a Bifidobacterium and therefore promotes a healthy microbiota, like those found in breastfed babies