Definitions of Age

(Jun 29, 2016)

When modelling longevity, age is well-known to be a crucial risk factor. However it is also well-known that the life-expectancy upon attaining any specific age will differ between populations. A seventy-year-old life-long smoker from France may reasonably regard the future with less optimism than a non-smoking Okinawan of the same age (allowing, of course, for the occasional highly noteworthy exception). We sometimes describe such variations in life-expectancy between populations as differences in the rate of aging, although chronologically, we all ( barring celebrities!) age at precisely the same rate. For this reason, there has long been a search for a biological measure of aging that could be usedů

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Tags: longevity, research, genetics, centenarians, age

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