Do you like drinking Coke? As a symbol of American culture, Coca-Cola is liked by many people, especially young people all around the world. But from now on, perhaps it will be hard for students in the US to get it on campus. A new agreement will end almost all sales of high-sugar fizzy drinks in US schools. The agreement allows only unsweetened juice, low-fat milk and water in primary and middle school vending machines and cafeterias. Former American president Bill Clinton helped the American Heart Association and the beverage industry  to come up with the agreement. He suffered from a weight problem and has had a heart operation since leaving the White House. He takes the agreement as "a bold step forward in the struggle to help 35 million young people lead healthier lives". Rising childhood obesity has become a big problem in America. A federal report noted that obesity has _ among teenagers in the past 25 years. It called for new limits on the marketing of junk food to children. Soda is a particular target because of its caloric content and popularity among children. Britain has already taken similar steps to fight obesity. A recent study shows that people in the UK are much healthier than the people in the US. However, it's better late than never. Now American schools are trying to make new rules to guide the students to choose healthy drinks. American schools say goodbye to Coca-Cola. What is the writer's attitude towards limits on junk food?
Positive. Neutral. Negative. Unclear.