According to ‘Reducing Obesity and Improving Diet’, a policy document produced by the Department of Health in March 2013, most people in England are overweight or obese. The associated health problems are costing the NHS more than £5 billion every year. To tackle the problem, there have been numerous government health initiatives, and doctors and health organisations have called for a wide array of health interventions, including sugar and fat taxes. So what’s the truth behind the obesity epidemic – are we right to be worried about becoming a nation of fatties? Feast on this extra-large Battle of Ideas debate.