In this June 26, 2012 file photo, two women speak to each other in New York. A national telephone survey found 13 states with very high rates of obesity. A national telephone survey found 13 states with very high rates of obesity in 2012. But overall, the proportion of Americans deemed obese has been about the same for years now. Results were made available by the Centers for Disease Control and Prevention. "A plateau is better than rising numbers. But it's discouraging because we're plateauing at a very high number," said Kelly Brownell, a Duke University public policy expert who specializes in obesity.