Radiolab The Elixir of Life
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Jun 6, 2025 
Join Avir Mitra, an ER doctor and medical mystery storyteller, and Bruce German, a scientist researching human milk oligosaccharides and gut health, as they uncover the vital link between breast milk and infant well-being. They explore the fascinating symbiosis of Bifidobacterium infantis in gut health, emphasizing its decline due to modern diets. From personal anecdotes about parenting challenges to groundbreaking discoveries in neonatal care, this conversation reveals profound insights into the invisible connections that shape our lives and communities.
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HMOs Feed Baby's Gut Bacteria
- Human milk oligosaccharides (HMOs) are the third largest component in breast milk and are indigestible by infants.
- These unique sugars exist to feed a specific gut bacteria, Bifidobacterium infantis, creating a vital symbiotic relationship.
Foal Rescue Experiment
- Shara Sheldon, a PhD student, applied knowledge of bifidobacterium to save thoroughbred foals from fatal diarrhea.
- She gave foals the bacteria, which prevented deadly infections and saved valuable animals.
Gut Wallpaper Protects Babies
- Bifidobacterium infantis coats the infant gut wall, preventing harmful bacteria from invading.
- This microbial barrier supports the gut lining and proper immune development in babies.