The document discusses proposals to tax junk food and sugary drinks in various countries in order to reduce obesity rates, especially among children. It notes that 1 in 3 US children are now obese, more than tripling over the last 30 years. Several states in the US have implemented special taxes on soda and snacks high in fat and sugar, and studies suggest this can help reduce healthcare costs while also generating tax revenue. However, others argue that such taxes unduly burden lower-income groups and do not effectively change behavior. Overall the document examines the debate around using taxes as a policy tool to discourage consumption of unhealthy foods and beverages linked to weight gain and obesity.