I always learn something when I read one of Roach’s books. And I usually am laughing when I learn it! Roach has a great (some would say twisted) sense of humor (don’t overlook the footnotes!) that enlivens a book that could be deadly dull. Never fear, Roach will entertain you even while discussing feces and other products of the human body. Gulp takes the subject of food and its ability to pass through the body while giving nourishment and pleasure to the human (and seventh grade boys a scintillating topic of conversation) and delves into the most intimate phases of digestion and excretion. She finds unique and interesting studies (both legitimately scientific and the just bizarre) and explains what was learned in a way understandable to laymen. One thing I learned is that 90% of taste is actually smell, so the alimentary canal begins with the nose and ends with the anus (another smell!) Sorry, I couldn’t help it – that is what reading a Mary Roach book will do to you. Enjoy!