Concepts and theories of aging Princy Francis M Ist Yr MSc(N) JMCON 2. Whereas there is a growing body of knowledge about the genomics of aging, what triggers the associated changes at the cellular or organ level is still a topic of debate. Definition 2. 72-74) Free radicals are also associated with aging. Because of many advances in science and medicine, food production and delivery, and sanitation, in general people live longer than they used to. ious theories of aging as evolutionary, molecular, cel-lular, and systemic. The early theories of ageing were very proscribed and prescriptive as to how individuals should age. See our User Agreement and Privacy Policy. The Aging Process Naomi. Telomeres can be thought of as bottle caps surrounding individual strands of DNA. It explores the effects of some of the rather distinct perspectives on aging that have emerged, beginning with the conceptualizations, research studies, and criticisms of disengagement theory, activity theory, and role theory, leading up to continuity theory and the liberation perspective. Aging Kashmeera N.A. Created by. powerpoint It is brought to you by DigitalCommons@Fairfield with permission from the rights-holder(s) and is protected by copyright and/or related rights. Ul- timately, disorders in housekeeping ability jeopardize homeostasis and expose cells to apoptotic … Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Flashcards. View PPT_Chapter02.pptx from NURS 71600 at Hunter College, CUNY. Learn biological theories aging with free interactive flashcards. Theories of aging There is no single universally accepted definition of aging. Theories of Aging Possible Mechanisms 3 Criteria of Aging Theories Change in Structure / Function 3 Catagories of Theories Wear and Tear Theories Wear and Tear ... – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 3bad1e-NWQ2M It is widely agreed that the immediate causes of the many different age-related diseases and conditions are different and that different treatments directed at the different causes have been effectively developed and deployed. A Major Role in Aging. No public clipboards found for this slide. First: Ask a question What is the question age 32 or 28 Presentations. You can change your ad preferences anytime. Rohme D. Evidence for a relationship between longevity of mammalian species and life-spans of normal fibroblasts in vitro and erythrocytes in vitro. A Comprehensive Review. These theories can be generally classified into evolutionary, involving historical and evolutionary aspects of aging, and physiologic or structural and functional changes. There are a bibliography says that aging is series of changes that occur over time and it starts when we born and other bibliography says that aging is a changes process by illness. Biological factors such as molecular and cellular changes are called primary aging, while aging that occurs due to controllable factors such as lack of physical exercise and poor diet is called secondary aging (Whitbourne and Whitbourne 2010). Biological Theories of Aging-Biological theories attempt to explain physical aging as an involuntary process, which eventually leads to cumulative changes in cells, tissues and fluid. nvkarp@gmail.com Objectives This presentation will describe aging from both a biological/physiological and a psychosocial ... – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 5002c6-NDljO Damage theories do not rely on a pre-determined timeline for aging and infer that we could increase our lifespan if we take steps to protect our bodies from cellular damage. Intrinsic Biological Theory-Intrinsic biological theory maintains that aging changes arise from internal, predetermined causes. The Gene Regulation Theory of aging proposes that senescence results from changes in gene expression ().Although it is clear that many genes show changes in expression with age (71, 98, 104), it is unlikely that selection could act on genes that promote senescence directly ().Rather, life span is influenced by the selection of genes that promote longevity (see above). The choice of these categories and the order in which they are presented reflect their affinity to physiological discourse (90). The programmed theory: Aging by Program, where biological clocks act through hormones to control the pace of aging. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Theories of Aging.ppt Cel - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. Given the major role the neuroendocrine system plays in physiology, this is an attractive theory of aging and neuroendocrine disease. Living and reproducing longer causes an evolutionary disadvantage that caused the evolution and retention of the lifespan limiting mechanism. Match. As we age, changes in essentially all physiological functions, including immunity, are apparent. If you continue browsing the site, you agree to the use of cookies on this website. These theories can be generally classified into evolutionary, involving historical and evolutionary aspects of aging, and physiologic or structural and functional changes. – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 41263d-ZDQyZ THE IMPORTANCE OF SOCIAL THEORIES OF AGING ... Economy of Aging, Life Course Perspective, Life Course Social Capital •The Second Transformation of Theory •Phenomenology and Constructivism, Critical Theory and Feminist Perspectives . MOLECULAR THEORIES. Modern Programmed Aging Theories contend that we age because we possess what amounts to a biological suicide mechanism or program that purposely limits lifespan to a species-specific value in order to obtain an evolutionary benefit. This chapter considers the range of theories of aging in the biological, behavioral, and social sciences. Otherwise, we would live forever. See our Privacy Policy and User Agreement for details. JMCON. Extrinsic Biological Theory- Extrinsic biological theory maintains that environmental factors … Third, we integrate and relate theories of cognitive aging to work. The Adobe Flash plugin is needed to view this content. Create. Proc Natl Acad Sci USA 1980;78:5009–5013. Living and reproducing longer causes an evolutionary disadvantage that caused the evolution and retention of the lifespan limiting mechanism. In Lueckenotte, A.G. (ed), • Consequently, species, including humans, evolved mechanisms (aging programs) that purposely limit their lifespans and ultimately cause the many age-related diseases and conditions. Modern Programmed Aging Theories • Modern programmed aging theories (beginning ~1990) contend that beyond the lifespan needed by each species there is an evolutionary disadvantage to living and reproducing longer. The three main systems that are connected with aging are the endocrine (hormonal) system, the immune system, and our genes. If you continue browsing the site, you agree to the use of cookies on this website. Raven, New York, 1990, pp. Now customize the name of a clipboard to store your clips. That is, the changes that result from the proposed process must become more obvious as the person grows older.
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