Bifidobacterium longum subsp. longum (B. longum) plays a central role in the microbiome throughout a human's life cycle. Our data shows that B. longum subsp. longum is most commonly found in the microbiome. This dominance is not by chance. Unlike B. breve, which is mainly found in the intestines of infants and specializes in carbohydrates found in breast milk like HMOs, B. longum subsp. longum has an impressive ability to metabolize a wider range of carbohydrates. Notably, it can break down plant fibers found in adult diets.
This flexibility in carbohydrate metabolism stems from its presence in both infant and adult intestines. This wide adaptability makes B. longum subsp. longum particularly relevant when infants begin to consume solid foods. During this phase of dietary transition, babies are faced with a variety of new food sources, including plant fibers. B. longum subsp. longum can help efficiently metabolize these complex carbohydrates, contributing to gut health during this crucial developmental phase. It not only supports digestion and nutrient absorption but also promotes a balanced and healthy microbial ecosystem in the gut.
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