1KHO 915: Stop Sanitizing Childhood | Dr. Jack Gilbert, Dirt is Good

1KHO 915: Stop Sanitizing Childhood | Dr. Jack Gilbert, Dirt is Good

From The 1000 Hours Outside Podcast by 1000 Hours Outside

September 10, 2026 · 1h 3m

About this episode

Dr. Jack Gilbert discusses the benefits of dirt and microbial exposure for children's health.

What if getting dirty is actually good for your kids? Ginny Yurich sits down with microbiome scientist Dr. Jack Gilbert, co-author of Dirt Is Good, to explore how exposure to the natural world helps shape a child’s developing immune system. Dr. Gilbert explains why dirt, animals, farms, siblings, pets, and everyday microbes aren’t necessarily things parents should fear—and why our increasingly sanitized, indoor lives may come with unintended consequences. They unpack fascinating research on everything from dropped pacifiers and hand-washed dishes to dogs, farm visits, breast milk, bathing habits, and the billions of microbes we encounter simply by stepping outside. Dr. Gilbert also explains why common sense still matters: microbial exposure can be beneficial without ignoring genuine risks from pathogens. The conversation closes with a surprising look at the connection between the gut microbiome, ultra-processed foods, and weight. It’s a fascinating reminder that childhood doesn’t need to be sterile—and that letting kids dig in the dirt, interact with animals, and experience the messy natural world may be doing far more for their bodies than we realize. Grab Dr. Jack's book here…

People in this episode

Host: Ginny Yurich

Guest: Dr. Jack Gilbert

Topics covered

Keywords

Sponsors

My Green Mattress, BetterHelp

Mentioned in this episode

Organizations: Dirt Is Good

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