theories of aging


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Related to theories of aging: social theories of aging

theories of aging

theories proposed to explain aging and death of cells and organisms. They are generally divided into two major groupings. The first group consists of programmed causes, with timed functional changes, and is generally based on genetic theories; this group includes programmed senescence of cells, shortening of telomeres, and declines in hormonal or in immunological function. The second group, called stochastic theories, consists of theories based on random events occurring over time and includes free radical generation, gradual wear and tear, mutation over time, and differences in metabolic rate.
References in periodicals archive ?
Biological decline appears to be part of the aging process; however, each individual's rate of decline, based on factors identified in current biological theories of aging, impacts the individual aging process.
In fact, with the tools of biotechnology and an influx of new knowledge, all-encompassing theories of aging are giving way to a more diverse perspective.
presents an overview of gerontological counseling for practitioners and continuing students, outlining major theories of aging, basic practical skill sets involved, and the psychodynamic and existential issues involved in working with older patients.
Aging and the Aged: Theories of Aging and Life Extension," Encyclopedia of Bioethics, New York: MacMillan, 1993.
Some symposium program topics of interest are: * Genetic Theories of Aging * The Demographics of Aging * Cultural Variations in Aging * What Do Centenarians Teach Us About Longevity?
in The Elements of Nursing (1980), they cover theories of aging, and assessment of body systems and functions including sexuality.
Following the keynote address on current theories of aging and issues of extended longevity, ten papers treat trends relating to analysis of polyphenols, bioavailability, and metabolism; and research on the roles of phytochemicals in brain and other vital functions in healthy aging, chronic disease, and disease prevention.