This entry in the You Can't series explores the science, physiology, symptoms, treatments, and main causes of common ailments. Colds, bellyaches, diarrhea, earaches, flu, skin conditions, allergies, germs, viruses and a glossary of types of doctors are featured. Humorous poems appear throughout, and the book is topped off with a Note to Parents from the author/physician and a page of simple activities and kickstarting questions that expand the child's understanding of the subject matter. The lively combination of fact and fiction, plus humorous art, will prove both thought-provoking and thoroughly enjoyable.