Obesity is described as one of the biggest problems facing mankind. The small US territory of Puerto Rico is debating whether to fine parents who fail to get their children to lose weight. But would this work elsewhere?
In 2011, Denmark brought in a "fat tax" on foods containing more than 2.3% saturated fat, but the inflated prices drove consumers over the border to Germany. The policy was dropped a year later and the government cancelled plans for a tax on sugar.