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Brooke Greenberg looks like a toddler, but is actually 17 years old. Born healthy, her parents noticed that something was wrong sometime between her first and second birthday, as she she was not developing and growing like other children.
Seventeen years later, Brook still holds the cognitive level of a baby, is 30 cm high, has all her baby teeth and enjoys been pushed around in her stroller. She hasn’t aged.
Despite the tragedy of a family confronted with a daughter that will never have the chance to become a healthy adult, Brook’s case fascinates  doctors and scientists who where not able to identify her problem until recent studies of her DNA. No answer was found yet, but apparently it has something to do with a defect in the genes that are in charge of the aging process.
Studies of Brooke’s DNA could eventually reveal how to slow the aging process and show the way towards treatments of diseases linked with old age. Or perhaps help us all to live longer.