In Australia, and indeed across the world, the proportion of children who are overweight or obese is increasing. Almost one-quarter of school-aged children are now overweight or obese. While the causes of obesity are complex and many, children's exposure to high levels of unhealthy food marketing is one factor that affects the food and drinks that children like, ask for, buy and consume. Extensive research evidence has found that, in general, children are exposed to high levels of food marketing, most of which is for unhealthy or high fat, sugar and/or salt food and drinks. The most commonly advertised foods have been found to be sugar-sweetened breakfast cereals, savoury snacks, fast food restaurants, onfectionery and soft drinks.