More than 75 per cent of Australians support a ban on junk food advertising during children's television programs, according to a new poll by the Australian National University. [...] When it comes to genetically modified foods, nearly half of those surveyed consider them to be safe to eat, but more than half said it was unlikely they would buy foods labelled as GM. "Ten years ago people were very concerned about genetically modified foods and most people would answer in surveys like this that they didn't think they were safe," Professor Lockie said.