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The metabolic stability theory of aging suggests it is the cells ability to maintain stable concentration of ROS which is the primary determinant of lifespan. [37] This theory criticizes the free radical theory because it ignores that ROS are specific signalling molecules which are necessary for maintaining normal cell functions. [37]
Genetic theories of aging propose that aging is programmed within each individual's genes. According to this theory, genes dictate cellular longevity. Programmed cell death, or apoptosis , is determined by a "biological clock" via genetic information in the nucleus of the cell.
Download as PDF; Printable version; ... Theories of biological ageing (2 C, 30 P) ... Aging theories based on group selection;
Biological aging explained "Chronological age is what the calendar tells us," Elissa Epel, PhD, a professor in the department of psychiatry & behavioral sciences at the University of California ...
Download as PDF; Printable version; In other projects Wikidata item; ... Theories of biological aging; A. Aging by design theory; Aging theories based on evolvability;
Download as PDF; Printable version ... Pages in category "Evolutionary theories of biological ageing" The following 8 pages are in this category, out of 8 total ...
Aging is characterized by a progressive loss of physiological integrity, leading to impaired function and increased vulnerability to death. The hallmarks of aging are the types of biochemical changes that occur in all organisms that experience biological aging and lead to a progressive loss of physiological integrity, impaired function and, eventually, death.
The two theories; non-adaptive, and adaptive, are used to explain the evolution of senescence, which is the decline in reproduction with age. [8] The non-adaptive theory assumes that the evolutionary deterioration of human age occurs as a result of accumulation of deleterious mutations in the germline. [8]