Severely Obese Are Fastest Growing Group of Overweight Americans

"The proportion of Americans who are severely obese -- those people 100 pounds or more overweight -- continues to increase rapidly and much faster than those with moderate obesity, but the rate of growth has slowed, according to a new RAND Corporation study. 

"The RAND study found that from 2000 to 2010, the proportion of Americans who were severely obese rose from 3.9 percent of the population to 6.6 percent -- an increase of about 70 percent."

Science Daily Link