16-year-old Brooke Greenberg has fascinated scientists with her inability to age past toddlerhood, possibly holding secrets to the process of aging. At only 30 inches and 16 pounds, she can't speak, wears diapers, and still has her baby teeth.
She's aged in some respects, such as her skeletal system, which is aged over 10 years. "There've been very minimal changes in Brooke's brain. Various parts of her body, rather than all being at the same stage, seem to be disconnected," said a doctor.
Many medical emergencies plagued her before turning 6 but would often simply go away without any explanation, such as a stroke, brain seizure, and a brain tumor that made her sleep 14 days. A small esophagus also requires the use of a feeding tube.