Nancy has 13 kids and 55 -- yes, 55 -- grandkids. She helps make up the first grandmother-granddaughter duo in the show's history. At 5-3 and 217 pounds, Nancy had had kept her weight in check for years -- including the births of all her children. But when her husband died several years ago, she began to pile on the pounds. She decided to go on the show to help her granddaughter, but realizes that she might be the biggest beneficiary. "I used to be very energetic, I used to really enjoy the grandkids," she said. "But lately, I haven't been. I think this is probably the best thing I could do for my family."