Just how is the best way to tackle childhood obesity? Dr George O’Neill and Kathryn Szrodecki debate

School programmes encouraging children to take more exercise and eat healthily are unlikely to have any real effect on childhood obesity, a study in the British Medical Journal suggests. More than 600 primary school pupils took part in a 12-month anti-obesity programme that included a daily opportunity to do 30 minutes of additional exercise and a six-week healthy eating and exercise programme. But the study found no improvements in the children's diet or activity levels. So what does this say about the messages about diet and exercise and just how is the best way to tackle childhood obesity? Stephen got the views of Dr George O'Neill and size acceptance campaigner Kathryn Szrodecki.