infants-scaled

The Hidden Crisis in America’s Babies: Why 25% of Infants Lack Critical Gut Bacteria

Published On: October 13, 2025Categories: Epigenetics, Gut health

What if I told you that 1 in 4 American babies is missing one of the most important bacteria for their lifelong health? What if this invisible deficit was setting them up for allergies, asthma, eczema, and other chronic diseases later in life?

As a functional medicine physician who has spent decades studying the gut-brain-immune connection, I’ve always known that the first few months of life are critical for establishing lifelong health patterns. But groundbreaking new research published in Nature Communications Biology has revealed something that both alarms and saddens me: we are witnessing the widespread disappearance of key protective bacteria from American babies’ guts.

The My Baby Biome study—the largest analysis of infant gut health ever conducted in the United States—followed 412 babies across 48 states and uncovered a crisis hiding in plain sight. The findings are both shocking and urgent, and every parent needs to understand what’s happening to our children’s microbiomes and what we can do about it.

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