On this question [government obesity policy], the evidence is utterly clear. Thanks to the work of the best scientific minds in obesity research, the most reliable evidence shows that the government’s plan should include taxes on unhealthy foods and beverages, front-of-pack traffic-light nutrition labeling, reductions of junk food and drink advertising to children, and school-based programmes to reduce television viewing and sugar-sweetened beverage consumption (Lancet, 2011;378:1451).