Experts say if you regularly scoff food directly marketed at children it could have be bad for your health.
Many products contain very high levels of sugar and salt, and could cause you problems when you're older.
These include breakfast cereal, juices and tinned pasta, as well as ready meals aimed at kids.
Food experts are now calling on manufacturers to clearly label all their products so people know exactly what's in them.
Eating too much sugar and salt could make you overweight.
You could also get rotten teeth plus raise your chances of getting illnesses like diabetes and heart disease when you're older.