bone

$Regan Detweiler, training in February 2014 in Columbus, Ohio. A rigidly low-carbohydrate diet in high school left Detweiler vulnerable to stress fractures, doctors say. She's eating better now — and feeling better, too.$

NPR Health

To Thrive, Many Young Female Athletes Need A Lot More Food

Patti Neighmond

Doctors and parents often miss the signs of female athlete triad syndrome — low energy, low bone density and irregular menstruation in an otherwise healthy-looking girl or teen.