Why are so many children in the U.S. overweight? The simple answer is that they are eating too much while moving too little. If you consume more calories than you burn, you gain weight. The childhood obesity epidemic is due to both inadequate physical activity among U.S. children and to excess caloric intake, which has been documented as having increased from 1977 to 1996, particularly in adolescents.
This section explores the specific eating and activity behaviors of children that research has linked to increased risk of obesity. Many of these behaviors have changed in recent years not because of a change in personal responsibility or willpower but because our food and activity environment has changed.
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