Here's a look at what you need to know about obesity in America. Obesity is achieved when a person reaches a particular body mass index.
Adults with a BMI of 25 - 29.9 are considered overweight, while adults with a BMI of 30 or more are considered obese.
Obesity can cause several types of medical issues including diabetes, heart disease, stroke, cancer and other diseases.
Statistics: Over a third of all adults and almost 17 percent of teenagers and children are obese.
The state with the highest rate of obesity is Mississippi with 34.9 percent of its residents being obese. The state with the lowest rate of obesity is Colorado with 20.7 percent.
In every state, more than 20 percent of adults are obese, and in 12 states the obesity rate is above 30 percent.
The groups with the highest rate of obesity are non-Hispanic blacks (45.9 percent), Hispanics (39.1 percent) and non-Hispanic whites (34.3 percent).
Obesity among U.S. adults doubled between 1990 and 2010.
Approximately 17 percent of children and adolescents aged 2-19 years are obese.
It is estimated that annual medical care costs of obesity are as high as $147 billion.
Timeline: 2004 - The CDC estimates that obesity contributed to the deaths of 112,000 Americans in 2000.
2006 - The CDC reports that 44 states and the District of Columbia have obesity rates between 20-30 percent. Mississippi and West Virginia report obesity rates of more than 30 percent.
July 2008 - The CDC releases results of a 2007 telephone survey of 350,000 Americans. More than 30 percent of adults in Mississippi, Alabama and Tennessee report themselves as obese. The national average is 25.6 percent, compared to 23.9 percent in 2005.
August 2010 - The CDC releases results of a 2009 telephone survey of 405,102 Americans. More than 30 percent of adults in Alabama, Arkansas, Kentucky, Louisiana, Mississippi, Missouri, Oklahoma, Tennessee and West Virginia report themselves as obese. The national average is 26.7 percent, compared to 25.6 percent in 2007.
June 2, 2011 - MyPlate replaces USDA food pyramid as the national effort to combat obesity continues. The dietary guidelines are displayed as portions of food on a plate instead of a three-dimensional pyramid.
June 26, 2012 - U.S. Preventive Services Task Force, an independent panel of private-sector experts, recommends all adults be screened for obesity.