The number of obese Tennesseans could double by 2030. The Annual “F as in Fat” report from the Robert Wood Johnson Foundation and Trust for America’s Health looked at data from the last two decades to predict future trends. By the year 2030, the study says more than 63 % of Tennessee residents will be obese. That would make Tennessee the fourth fattest state in the nation. One of the authors of the report says the future numbers are based on how many Tennessee children have serious weight issues now.