This was an interesting reading experience. The author has a knack for infusing humor into her writing, she grossed me out a little but also made me laugh.
I never knew people taste tested pet food, why would they anyway? She also discusses the taboos behind eating certain foods. There is an entire chapter on saliva and one on William Beaumont and Alexis St. Martin and his experiments. The author introduces you to all kinds of strange experiments as different scientists discuss and examine the digestive tract. There is a chapter on constipation and how it can kill you. I need to be brave a grab a copy of Stiff: The Curious Lives of Human Cadavers.