I thought this book was very long but it was indeed interesting. Not only did the authors inform about what cancer is and the causes, but it also shares stories of those who were diagnosed with this terrible sickness. The book overall was very sad but it also provided the reader with personal stories that had happy endings. The book had almost a picture of diagram for every two pages that would engage the reader more. It also provided examples of how to stay safe and avoid this sickness. Because it is long and has a lot of text, I would say this was written for children who are in fifth grade or older. The main idea of this book was to inform about cancer, how people get it, and how serious it can be. It also shows the reader how people feel when they are diagnosed, or when they have been treated, which makes this informational book very relatable. ( )