As just noted, its important to begin a discussion of the wear and tear theory of aging by recognizing that there are several distinct theories of aging of which the wear and tear theory is just one. Like machines become damaged and eventually break down when utilized for a certain period of time, the wearandtear theory proposes that the human body also undergoes aging due to damage from accidents, diseases, radiation, toxic substances, food, and many other harmful substances when it is utilized for a long time. Psychology definition of wear and tear theory of aging. This paper will depict a clinical situation, encompass the biological theory of.
It is very logical because it is what happens to the nonliving things that people observe around them i. So the wear and tear theory of aging was first introduced by dr. Meiner, edd, aprn, bc, gnp learning objectives on completion of this chapter, the reader will be able to. Aging is the process of becoming older, as we age, multiple mutations occur that concern all the processes of aging well as it compromising a number of different genes. While there is evidence for and against each of these theories, chances are that eventually, we will find that it is a combination of two or more of these. There are many theories of biological aging, such as the cellular aging theory. Spontaneous mutations the spontaneous mutations theory, also known as the somatic mutation hypothesis, states that the crucial events that cause aging are mutations. Use, accidents, disease, radiation, toxins and other detrimental factors adversely affect different parts of the body in a stochastic fashion. Medical, wear and tear, age, gmk,good morning kuya, untv there is more to mornings than your usual dailypaper and coffee habit. Discuss the rationale for using an eclectic approach in the development. In agreement with this, the experimental elimination of senescent cells from transgenic progeroid mice 24 and nonprogeroid, naturallyaged mice 25 26 27 led to greater resistance. Cells are aggravated by the harmful effects of internal and external stressors, which include pollutants and injurious metabolic byproducts, now known as free. Cellular aging theory, and the wear and tear theory. The freeradical theory of aging was first proposed by dehman harman in the 1950s.
One of the earliest theories of aging, the wear and tear theory, proposes that cell errors are the result of wearing out over time because of continued use. Indirect ev idence for wearandtear theories of aging is provided by individuals who repeatedly expose their bodies to harmful conditions or substances, for instance, large doses of alcohol. Rate of living theory is the idea that the faster an organism uses oxygen, the shorter it lives. One of the earliest theories of aging, the wearandtear theory, proposes that cell errors are the result of wearing out over time because of continued use. His research articles have appeared in the journals of. Wearandtear theories of aging suggest that the mechanical functions of the body simply stop working efficiently. Like machines become damaged and eventually break down when utilized for a certain period of time, the wear and tear theory proposes that the human body also undergoes aging due to damage from accidents, diseases, radiation, toxic substances, food, and many other harmful substances when it is utilized for a long time. Mar 09, 2015 free medical consultation from 1,360 satellite monitoring centers. The process and theories of aging semantic scholar. The aging process is quite complex, so the probability that any one theory could satisfactorily explain it is extremely unlikely. Usually when the breast tissue begins to develop and enlarge is a good time to start. The wear and tear theory of aging was first introduced by dr. Cells and tissues have vital parts that wear out resulting in aging.
Wear and tear theory, where vital parts in our cells and tissues wear out resulting in ageing. Indirect evidence for wearandtear theories of aging is provided by. Assistant professor of medicine division of geriatric medicine fellow, institute on aging. The order to disorder theory some of these contradict and others overlap. Accidental theories of aging rely on chancethe notion that organisms get older by a series of random events. It is clear that both genetics and wear and tear over time both. The free radical theory of ageing one of the most prominent theories to explain ageing is the free radical theory of ageing which was initially proposed by harman in the 1950s 7. Biological theories of aging human growth and development introduction aging is a biological phenomenon all the living things are undergoing. Cefalu, md, ms keywords aging telomeres free radicals autoimmune theory of aging geneticdevelopmental theory of aging theories of aging several theories may explain the normal aging process, either alone or in combination with other theories table 1. Theories and mechanisms of aging ohio state university. We are approaching getting nearer to the death from the time of the birth onwards.
We are not sure about anything in the world except the aging. Free radicals theory asserts that free radicals in the environment. Aging theory handout wear and tear theory of aging what it. A poor diet, too much alcohol, and cigarette smoking are thought to accelerate natural wear and tear. Over the years many theories on aging have been developed and studied. Wear and tear theory asserts that cells and tissues simply wear out. Indirect ev idence for wear and tear theories of aging is provided by individuals who repeatedly expose their bodies to harmful conditions or substances, for instance, large doses of alcohol. Examples are dna damage from free radicals or just the wear and tear of daily life.
Simple deterioration theories fundamental limitations wear and tear many people believe that biological aging is simply the result of universal deteriorative processes such as oxidation, entropy, or wear and tear that cause aging in machinery, exterior paint, and other inanimate objects. The idea is that use, and overuse, of your organs pushes them to the brink of destruction. Wear and tear theories of biological aging propose that aging in humans and other animals is simply the result of universal deteriorative processes that operate in any organized system. Figure 3 1 activity theory suggests that remaining involved and engaged is a needed ingredient to a satisfying late life. Once they wear out, they can no longer function correctly. Gene theory, which considers aging to be the result of a sequential switching on and off of certain genes, with senescence being defined as the time when ageassociated deficits are manifested. There is no specific age when you need to start wearing bras. In this entry, social exchange theory is defined and discussed as it applies to the aging process. This theory could also be called the use it and lose it theory. The cellular senescence theory of aging posits that organismal aging is a consequence of the accumulation of less physiological useful senescent cells. Aging theory handout wear and tear theory of aging what. Wear and tear theory body cells, structures and functions wear out or are over used through exposure to internal and external stressors.
Medical, wear and tear, age, gmk,good morning kuya, untv there is more to mornings than your usual dailypaperandcoffee habit. Analyze the prominent biologic, sociologic, and psychologic theories of aging. Wear and tear aging theories many people believe that aging is simply the result of deterioration caused by wear and tear, oxidation, other molecular damage, or other unavoidable natural process that. Both pro pose that the body retains injurious or unusable substances. Wearandtear theory of aging free online psychology dictionary. Thought that aging was due to changes in body humors that began in early lifethese changes caused a slow increase in dryness and coldness of the body roger bacon c. Apr 25, 2016 in this entry, social exchange theory is defined and discussed as it applies to the aging process. Another popular theory of aging that has gained momentum in the last 10 years is. First, social exchange theory, which is rooted in economic, psychological, and sociological foundations, is introduced, followed by a description of how social exchanges change and develop as individuals age, why they are important, and innovative.
Wear and tear is damage that naturally and inevitably occurs as a result of normal wear or aging. His original theory4 was based on a presumption that damage to the adult soma was unavoidable and that damage must accumulate. The free radical theory of ageing as stated by harman proposes that free radicals derived from oxygen are responsible for damage associated with ageing. Here are the four principal theories of aging, each of which accounts for some aspects of the process. Following this period we would expect more or less troublefree operation for a. Crosslinking theory states that crosslinked proteins accumulate and slow down the bodys processes. An aging theory aging happens to everyone, a part of life that is unavoidable. Some theories are biological and some are psychosocial. Wearandtear theory body cells, structures and functions wear out or are over used through exposure to internal and external stressors. Pdf aging is not a process of wear and tear researchgate. Theory that suggests cells and tissues have vital parts that wear out from repeated use and result in aging. Aug 01, 2010 so the wear and tear theory of aging was first introduced by dr.
Wear and tear many people believe that biological aging is simply the result of universal deteriorative processes such as oxidation, entropy, or wear and tear that cause aging in machinery, exterior paint, and other inanimate objects. According to these theories, humans age for the same reasons and because of the same processes that cause aging in automobiles and exterior paint. August weismann, a german biologist, in 1882, it sounds perfectly reasonable to many people even today, because this is what happens. Wear and tear theories of biological aging propose that aging in humans and. August weismann, a german biologist, in 1882, it sounds perfectly reasonable to many people even today, because this is what happens to most familiar things around them. Evolutionary senescence theory, the immunological theory, the free radical theory, and the programmed longevity theory have garnered the most research over the years and will be discussed below. Wear and tear theory of aging programmed aging theories. Sourcebook of family theory and research, and aging in east and west.
When this damage affects dna, free radicals can interfere with basic. The idea that bodies wear out with age is so ancient, so pervasive, and so deeply rooted that it affects our thought in unconscious ways. The mitochondrial aging theory, a variant of the free radical theory was. This regulation would depend on changes in gene expression that affect the systems responsible for maintenance, repair and defense responses. Wear and tear is an accumulation of errors and damage due to natural use. Psychology definition of wearandtear theory of aging. Define aging from a biologic, sociologic, and psychologic framework.
Wear and tear theories of aging things you didnt know. Answers from trusted physicians on wear and tear theories of aging. The wear and tear theory of aging, one of several theories, asserts that the effects of aging are caused by progressive damage to cells and body systems over time. While there is evidence for and against each of these theories, chances are that eventually, we will find that it is a combination of two or more of. Pathology and laboratory medicine, salt lake va medical center, and department of pathology, university of utah school of medicine, salt lake city, ut 842 abstract a wide variety of theories to explain the aging process have been pro. The wear and tear theory of aging believes that the effects of aging are caused by damage done to cells and body systems over time. When the body metabolizes oxygen, free radicals are produced that can cause damage to cells and tissues. Sociological theories of aging activity theory havighurst and albrecht 1953 proposed one of the. Harmans theory, which now has various modifications, holds more weight than the rate of living theory or the wear and tear theory. Free medical consultation from 1,360 satellite monitoring centers. A poor diet, too much alcohol, and cigarette smoking are thought to accelerate natural wear and. Modern biological theories of aging pubmed central pmc.
If you drive it, it will begin to break down from general wear and tear. Abdul wahab pathath and others published theories of. The bestaccepted nongenetic theories are two similar the ories. Theories of human aging of molecules to society medcrave. It is used in a legal context for such areas as warranty contracts from manufacturers, which usually stipulate that damage from wear and tear will not be covered wear and tear is a form of depreciation which is assumed to occur even when an item is used competently and with care. Mark stibich, phd, fidsa, is a behavior change expert with experience helping individuals make lasting lifestyle improvements.
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