A Case for the Ages

Brooke Greenberg and her family appeared on Katie yesterday as part of a show focused on medical mysteries. Greenberg, who is 20 years old, appears to be the age of a toddler. While the family does not know the root of Greenberg's apparent inability to age, Mount Sinai's Eric Schadt, who also appeared on the show with host Katie Couric, has been studying her genome.

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