When did "fat" become a four-letter word? Leaders of the body acceptance movement say we've become a fat-phobic nation, and it's time to stop shaming fat people. In this hour, curvy girls and plus-size women talk about the emotional and physical costs of America's toxic obsession with weight and body image. Brittany Gibbons on Fat Shaming; The Science and Politics of Weight Obsession; A Reading from Dietland; Sarai Walker on Dietland; The History of the Gym; Ruth Reichl on Food Culture.