Childhood obesity has been increasing over the past several decades. To monitor trends in obesity and in behaviors that contribute to weight gain, researchers in the Health Behavior Branch of the Division of Intramural Population Health Research analyzed data from a nationally representative sample of 35,000 kids ages 11 to 16, collected in 2001, 2005, and 2009. Kids reported on their diets, physical activity, height, and weight.
The Researchers found that (PMID: 24043281):
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