The old saying goes: you are what you eat -- which appears to carry through into the microbial content of one’s gastrointestinal tract. In today's Academic Minute, the University of Nevada Las Vegas's Alyssa Crittenden compares the bacteria living inside an indigenous African tribe with that of an urban dwelling control group to study the differences. Crittenden is a behavioral ecologist and nutritional anthropologist at UNLV. A transcript of this podcast can be found here.