[JSWolf]

I'd like to nominate Gulp by Mary Roach.

The alimentary canal—the much-maligned tube from mouth to rear—is as taboo, in its way, as the cadavers in Stiff, and as surreal as the universe of zero gravity explored in Packing for Mars. In Gulp we meet the scientists who tackle the questions no one else thinks—or has the courage—to ask. How much can you eat before your stomach bursts? Why doesn't the stomach digest itself? Can wine tasters really tell a $10 bottle from a $100 bottle? Why is crunchy food so appealing? Can constipation kill you? Did it kill Elvis? We go on location to a pet food taste-test lab, a fecal transplant, and into a live stomach to observe the fate of a meal.

Why is crunchy food so appealing? Why is it so hard to find words for flavors and smells? Why doesn’t the stomach digest itself? How much can you eat before your stomach bursts? Can constipation kill you? Did it kill Elvis? In Gulp we meet scientists who tackle the questions no one else thinks of—or has the courage to ask. We go on location to a pet-food taste-test lab, a fecal transplant, and into a live stomach to observe the fate of a meal. With Roach at our side, we travel the world, meeting murderers and mad scientists, Eskimos and exorcists (who have occasionally administered holy water rectally), rabbis and terrorists—who, it turns out, for practical reasons do not conceal bombs in their digestive tracts.

Like all of Roach's books, Gulp is as much about human beings as it is about human bodies.

Amazon (US)...Google Play (ePub)...Kobo (Might be able to use a discount code)