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In this photo taken Oct. 3, 2011, an infant’s growth is measured during a check-up at Children’s Hospital Boston. A new study by researchers there says babies who progress past at least two percentiles in weight and length on growth charts are at risk for obesity later in childhood. (AP Photo/Children's Hospital Boston)

In this photo taken Oct. 3, 2011, an infant’s growth is measured during a check-up at Children’s Hospital Boston. A new study by researchers there says babies who progress past at least two percentiles in weight and length on growth charts are at risk for obesity later in childhood. (AP Photo/Children's Hospital Boston)

Obesity in America

About 32 million more Americans will become obese by 2030, upping obesity rates to 42 percent of the U.S. population, according to a new report from the U.S. Centers for Disease Control and Prevention.

The report also predicts that the proportion of Americans who are severely obese, will reach 11 percent, double the current rate.

The estimated medical costs of caring for the obese average about $147 billion a year.