Doctors are warning that childhood obesity has now reached a "state of emergency" and requires a special government taskforce like the Cobra committee.
The Royal College of GPs along with 11 other organisations say the health service will struggle to cope with the mounting cost of obesity unless urgent action is taken now.
They have written an open letter to the Chief Medical Officer for England, Dame Sally Davies, outlining their concerns.
The letter claims that "an entire generation is being destroyed by a diet of junk food and sugary drinks".
Dr Rachel Pryke, who is the RCGP's 'clinical champion' for nutrition, said youngsters were being "set up for a lifetime of sickness".