Brooke Greenberg, the toddler who never aged, dies at age 20 Brooke with her younger sister. A few years ago ZME Science reported the peculiar case of Brooke Greenberg, a woman who was born prematurely at just four pounds but never physically developed into an adult.
Brooke Greenberg, left, is 16 years old in this photo. Her younger sister Carly (13) holds her. Brooke suffered from "Syndrome X", an unknown affliction that forced her to remain the size of a toddler her entire life. She died on October 24, 2013 at the age of 20.