(Photo by Mario Tama/Getty Images
UNDATED (CNN) -- "F as in Fat", that's the name of a new report on the future of America's waistline.
The study conducted by the Trust for America's Health and the Robert Wood Johnson Foundation uses government data on obesity to make predictions about our weight in coming years.
This year Mississippi topped the Centers for Disease Control list of chunkiest states, with a nearly 35-percent adult obesity rate.
But according to the new report, by 2030, 13 states could have obesity rates over 60-percent.
Some experts question the accuracy of this weighty research saying it is difficult to predict future weight trends accurately.
The report proposes to put America on a weight-loss challenge saying if all adults reduced their body mass index by 5-percent, states could save billions of dollars on health care.