Why is it a problem?

One in 25 children are now classed as being obese. With about one in ten kids already overweight, doctors are really worried about how this might affect children's health when they're older.

We're putting on weight because we eat a lot more calories but we don't do as much exercise as we used to.

Also, experts say portion sizes have got bigger, fast food is available everywhere and kids are encouraged to buy high fat and high sugar products advertised by celebs