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Research-Wedmen's Health. The Icon School of Medicine at Mount Sinai, we find a way.

Welcome to the Science Podcast for August 25th, 2017. I'm Sarah Crespi.

In this week's show, Sam Smith talks with us about the gut microbes of modern hunter gatherers and how they compare with the rest of the world. And Jen Goldbeck is back with the monthly book segment.

She talked with Vivian Evans, author of The Emoji Code,

The Linguistics Behind Smiley Faces and Scaredy Cats.

Our online news roundup will be back next week.

At this point, you probably know we all carry around microbial helpers on the

insides and outsides of our body. And the differences in these populations from person to person,

particularly in the gut, are long term. But have our gut microbiomes gotten more diverse over time,

less diverse over time? As people move around, as diets change, what was the ancestral

gut microbiome population like? Sam Smiths and colleagues compare the resident microbes in the

Hadsa population of Tanzania with people from 16 other

countries to try to answer this question. Welcome, Sam. Thank you. Okay, so let's start with the Hadsda.

What makes them so special? So before I begin, I really wanted to take a moment just to thank the

Hadesa for being so gracious and open in participating in this study.

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