Centenarians show successful aging as they remain active and alert at very old ages. Scientists at Stanford University and the University of Bologna have begun to unravel the basis for longevity by finding genetic loci associated with extreme longevity.
Previous work indicated that centenarians have health and diet habits similar to the average person, suggesting that factors in their genetic make-up could contribute to successful aging. However, prior genetic studies have identified only a single gene (APOE, known to be involved in Alzheimer's disease) that was different in centenarians versus normal agers. The results from the current study indicate that several disease variants may be absent in centenarians versus the general population.
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