programmed aging theory

programmed aging theory

1 a theory of aging that states that life expectancy is predetermined and timed for individual species, with cells programmed to divide a certain number of times. Functional changes in the cells cause aging of the cells and thus the organism.
2 any of various theories of aging based on timed functional changes. See theories of aging.
References in periodicals archive ?
Programmed Aging Theory proposes that cells stop dividing as they age due to shortening of the telomere, the distal part of the chromosome arms (Hayflick, 1985; 1996; Sozou & Kirkwood, 2001).
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