AdvertisementTo Thrive, Many Young Female Athletes Need A Lot More FoodAugust 31, 2015Patti NeighmondfacebookEmailRegan Detweiler, training in February 2014 in Columbus, Ohio. A rigidly low-carbohydrate diet in high school left Detweiler vulnerable to stress fractures, doctors say. She's eating better now — and feeling better, too. (Courtesy of Nationwide Children's Hospital)