Current methods to compare patterns of aging are limited, it confuses two distinct elements of this process: rhythm and form. This was stressed by Dr. Annette Baudisch the Max Planck Institute for Demographic Research in Rostock, Germany, after completing an investigation into the matter.
News Science and Technology
18/03/2011
Using data from 10 different groups of animals, classified Baudisch pace and form of aging of each species.
Some organisms live recently, and many others. This determines the rate of aging. Short-lived species have a rapid rate of aging, and long-lived species have a slow rate of aging. The aging rate describes the speed with which advances the clock of life. For humans, moving slowly for small animals moving very fast.
contrast, describes how aging and mortality (risk of death) changes with age. One way to measure how aging is the "factor aging. " For example, the common swift is an aging factor of 2, ie doubles mortality throughout adult life, compared with modern humans, we have an aging factor of more than 2,000.
Life expectancy for Swedish adult women (ie the remaining life expectancy after leaving behind puberty) is about 70 years, while the adult life of a robin takes only 1.7 years. But in the adult life, aging is so strong in humans, the aging factor is 2132, while for the robin is only 2.
At the age of 15 years, only 2 out of 100,000 young women die in Sweden, while one in two women with 110 years dies. This large difference in mortality at the beginning and end of adult life means that human beings in the form of aging is a very steep slope, while in other species like the common swift, it is almost a plain. And in some species the risk of death may even decrease with age up to a limit, and elderly individuals may have time for much lower risk of death than younger individuals. This seems to be the case for the desert tortoise and crocodiles.
source
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http://gerontologia.maimonides.edu
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