The entire DNA sequence of a woman who lived to 115 has been pieced together by scientists. The woman, who was the oldest in the world at the time of her death, had the mind of someone decades younger and no signs of dementia, say Dutch experts.
The study, reported at a scientific conference in Canada, suggests she had genes that protected against dementia. Further work could give clues to why some people are born with genes for a long life, says a UK scientist.
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