"My entire life I have been less fat and more fat, but never not fat." According to family lore, when Rabia Chaudry's family returned to Pakistan for their first visit since moving to the United States, two-year-old Rabia was more than just a pudgy toddler. Dada Abu, her fit and sprightly grandfather, attempted to pick her up but had to put her straight back down, demanding of Chaudry's mother: "What have you done to her?" The answer was two full...