World Cancer Day is a special day when people from all around the world come together to talk about cancer. Cancer is something that can happen to anyone, and it's really important to know how to prevent it and how to help people who have it.
Cancer is when parts of your body start to grow out of control, which can make you very sick. Sometimes, people who have cancer have to go to the doctor a lot and take special medicine or have surgery to get better.
On World Cancer Day, people wear special ribbons or clothes that are a certain color to show that they care about cancer. They might also talk to their friends and family about how to stay healthy and avoid getting cancer. Some people even raise money to help scientists learn more about cancer and how to cure it.
It's really important to be kind and supportive to people who have cancer. Even though they might look and feel different than before, they're still the same person on the inside, and they need love and care just like everyone else. That's why World Cancer Day is so important - it helps everyone remember how to be a good friend to people who have cancer, and how to take care of themselves so they can stay healthy.