ELI5: Explain Like I'm 5

Cancer epidemiology

Cancer epidemiology is a way of understanding how many people get cancer, why they get it, and how doctors can help them.

Imagine you and all your friends have a toy that sometimes breaks. Sometimes, one of your friends will break their toy and you wonder why.

Cancer is like a broken toy. Researchers use cancer epidemiology to study how many people break this "toy." They look at how many people get cancer, and try to figure out what might be causing it.

They might also look at how different things make it more or less likely that someone gets cancer. For example, they might study whether people who live in certain parts of the world are more likely to get cancer than others. They might also look at whether things like the food we eat, the air we breathe, and whether we smoke, can increase our risk of getting cancer.

By studying cancer epidemiology, researchers can help doctors find better ways to treat cancer, and they can help people understand how to avoid getting cancer in the first place.