The Girl Who Can't Put On Weight

Lizzie Velasquez ( 23 ) is an Austin, Texas girl that weighs just 4 stone but she'll be the first to tell you she's not anorexic. The syndrome that she's living with is so rare that it is to this day undiagnosed. Her body does not store fat so she has to eat that much, at least every 15 minutes, just to stay alive. When she was born she weighted just 2 pounds, 10 ounces and doctors have no idea how she survived.