The South has the nation's largest percentage of obese residents, a new survey by the Centers for Disease Control finds, with 30% of adults in Mississippi, Alabama and Tennessee qualifying as obese. Even in Colorado, the state with the best fat stats, 19% of the populace is obese.
                                    
                                    
                                
                                
                             
                            
                            
                            
                            
                            
                                
                                
                                    
                                        The overall proportion of Americans 18 or older who are obese, based on self-reporting of weight,  increased nearly 2% between 2005 and 2007, the CDC found, bringing the nationwide  figure to 25.6%.