Children are in danger of seeing social media like sweeties and their online time like junk foodAnne Longfield Launching a campaign to help parents manage their children’s internet use, she said it was essential that parents understood the importance of balancing their child’s time online, just as they would balance their diet.”Many children are using social media and the internet like sweets or junk food. Parents wouldn’t let their kids eat a double cheeseburger and fries every day, so they shouldn’t let them spend time online in an unhealthy way,” she said. “They have a responsibility as the providers of the smart phones, computers and iPads their children use, to step in now and make sure their children’s online lives are healthy.”We do think there is a role here for parents to step up, to stop waiting for others to come up with the solution, be that government or [social media] companies.”Her comments come after a report was published showing that kids in all age groups were spending even-longer periods of time online than before. According to media regulator Ofcom the internet has become the most popular media pastime for children in the last year, overtaking television. Want the best of The Telegraph direct to your email and WhatsApp? Sign up to our free twice-daily Front Page newsletter and new audio briefings. Longfield said that her “digital five-a-day” campaign would help parents ensure that their children’s online interaction had a positive impact.“When phones, social media and games make us feel worried, stressed and out of control, it means we haven’t got the balance right. With your diet, you know that, because you don’t feel that good. It’s the same with social media,” she said in an interview with the Observer.“It’s something that every parent will talk about especially during school holidays – that children are in danger of seeing social media like sweeties, and their online time like junk food.” It is now estimated that children aged five to 15 are spending 15 hours a week online, with 12 to 15-year-olds spending over 20 hours online a week.Longfield also urged social media providers, Facebook and Snapchat, to be as proactive as they can about creating a good place and a safe place for kids to be. Longfield said it was essential that parents understood the importance of balancing their children’s time online, just as they would their dietsCredit:Getty Images Parents need to stop their kids bingeing on social media “like junk food” during the summer holidays, the children’s commissioner has said.Anne Longfield has urged parents to “stop waiting for others to come up with a solution” after it was revealed that youngsters are spending more time online than ever before.