In an effort to fight childhood obesity, the William J. Clinton Foundation and the American Heart Association have joined to form the Alliance for a Healthier Generation to establish new guidelines to limit portion sizes and reduce the number of calories available to children during the school day. Working with representatives of Cadbury Schweppes, Coca-Cola, PepsiCo, and the American Beverage Association -- the country's largest beverage distributors -- under the new agreement, only lower calorie and nutritious beverages will be sold to schools.

"If an 8-year-old child consumes 45 fewer calories a day every day for a decade, when he or she graduates from high school that child will weigh 20 pounds less," says former President Bill Clinton. Obesity is known to increase the risks of developing some cancers, as well as heart disease and diabetes. This agreement will affect 35 million public school kids nationwide, where studies indicate nine million kids are currently overweight.

According to the initiative, these science-based guidelines are just one part of a plan to help kids live healthier lives by decreasing excess calories consumed while increasing calories burned. The guidelines limit the number of calories in beverages to 100 calories per container, except for certain milks and juices whose nutritional value justifies the higher number of calories.