Like most 16-year-olds, Brooke Greenberg enjoys shopping and listening to rock music.

But unlike other girls her age who are learning to drive and going to the prom, Brooke still wears diapers, travels in a stroller and can’t walk or talk. Like a toddler, Brooke is 2-and-a-half feet tall and weighs only 16 pounds.

“For the past 10, 11 years, she’s looked the same,” said Brooke’s father, Howard Greenberg. “The price is, she’s adorable. She stopped aging at the right age.”

Doctors aren’t sure how or why, but Brooke, who lives in Baltimore, Md., developed a mutation of the gene that controls aging and development.,2933,...0.000000:b0:z5