By how much would limiting TV food advertising reduce childhood obesity?

"Conflicts of interest : None declared."

"Funding ZON-MW (partial); the Netherlands organization for health research and development; Australian NHMRC (partial) under a Capacity Building Grant. Conflicts of interest: None declared. Key pointsThere is evidence to suggest that advertising for energy-dense food increases children's’ body mass index, but it is not well-know how much advertising contributes to the prevalence of childhood obesity.This study uses data from various sources in a logical framework to quantify the effect of TV food advertising on childhood obesity in the USA, 2003.TV food advertising may be responsible for 15–40% of the obesity prevalence among 6- to 12-year-old US children, with a wide margin of uncertainty.Limiting the advertising of high-calorie foods could well be an element in a broader effort to make children's diets healthier."