WAMU 88.5 - American University Radio
Now Playing

In Digestion: Mary Roach Explains What Happens To The Food We Eat

With books like Stiff and Spook, Roach has built a reputation for making unpalatable subjects entertaining. In her new book, Gulp, she tackles the human digestive system, from the mouth on down. Along the way, she gets a sedation-free colonoscopy and goes on location for a fecal transplant.