"A resource for classroom learning and home-schooling for kids age 9 to 13, with information about: the surprising role that food and digestion play in your mood and immune system, the amazing tools your body uses to break down food including acids, which do their thing without burning a hole in your stomach, the incredible truth that not all bacteria is bad--billions of 'helpful bacteria' belong in your gut, and so much more. Dr. Jennifer Gardy also takes stomach-turning detours to investigate the science behind burps, barfs, and farts, proving that learning about the wonderful world of your gut--takes guts!"--Provided by publisher.

Title proper from title frame. Includes index.