A Dangerous Trend

People who are 100 pounds or more overweight are the fastest-growing group of overweight people in the United States, researchers reported this week. The proportion of the severely obese was 50 percent higher in 2005 than it had been in 2000 -- a startling rate of growth.

"The proportion of people at the high end of the weight scale continues to increase at a brisk rate despite increased public attention on the risks of obesity and the increased use of drastic weight loss strategies such as bariatric surgery," said Roland Sturm, an economist at Rand Corporation, a nonprofit research institute.

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