As part of first lady Michelle Obama’s Let’s Move campaign to fight childhood obesity, the American Academy of Pediatrics is encouraging its members to check the body mass index, a number that takes into account height and weight, of all children at every checkup. Children and parents also will get a prescription for healthy, active living that they can discuss with their doctors.

WHAT NEEDS TO BE DONE? Several top nutrition and fitness experts offer their ideas for changes that need to be made to combat childhood obesity:

Clean up school food. “School food is the hottest area being addressed around childhood obesity,” More >