by JONATHAN LEAKE
Brooke Greenberg is old enough to drive a car and next year will be old enough to vote — but at 16lb in weight and just 30in tall, she is still the size of a one-year-old.
Until recently she had been regarded as a medical oddity but a preliminary study of her DNA has suggested her failure to grow could be linked to defects in the genes that make the rest of humanity grow old.
If confirmed, the research could give scientists a fresh understanding of ageing and even suggest new therapies for diseases linked to old age.
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