Cancer is a major health problem for people all over the world. Millions of people are affected by cancer each year. Many people have family or friends who they've lost to cancer. Others know a friend who has lost someone they love. You hear about cancer on TV and read about it online. But many people-kids and adults-don't understand much about cancer. What happens when someone gets cancer? How do you get cancer? What is life like for people around the world who have cancer or live with someone who does? How are people fighting back against this deadly disease? In this book, you'll find the answers to all of these questions and more!