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Weekly Powerpoints - TheoriesofAging WhatisAging

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Theories of Aging
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What is Aging Most often described by chronology or by  measurement of time since birth Social age is measured by age-graded  behaviors, carrying expected status and  role within a particular culture or society Biological aging is the expression of  declining functional capacity of most basic  structures in cells, which in turn affects  functioning of the organism
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Biological Theories of Aging Biological theorists concur that the body as a whole  becomes disorganized and chaotic as it ages, is unable  to sustain itself, and so death occurs. Biological theories attempt to explain the physical  process of aging including alterations in structure and  function, development, longevity and death. Biological theory also attempts to explain why people  age differently over time and what factors affect  longevity, resistance to organisms, and cellular  alterations or death. An understanding of biological theory can provide the  nurse with knowledge about specific risk factors  associated with aging and about how people can be  helped to minimize or avoid risk and maximize health.
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Biological Theories of Aging Biological theories are broken into two  groups: stochastic (aging events occur at  random) and nonstochastic (aging is  predetermined). Cellular functioning: changes to cell that  decrease ability to replicate attributed to  aging. The stochastic theories or error theories  suppose that aging is the result of an  accumulation of errors in protein synthesis  over time. Nonstochastic theories are those that  attribute aging to a preprogrammed, 
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Stochastic Theories Genetic  theories explain that aging is influenced primarily by gene  formation and the impact of environment on genetic coding.  According to genetic theory aging is an involuntarily inherited process that operates  over time to alter cellular or tissue structures.  Life span and longevity changes are predetermined. Genetic theories include error theory, somatic mutation, wear and tear Somatic mutation theory which assumes that chromosomal abnormalities  result over time because of cell exposure to radiation or chemicals. Environmental history: according to this theory factors in the environment 
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Weekly Powerpoints - TheoriesofAging WhatisAging

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