Wednesday, March 13, 2019
Biological Theories of Aging
maturement is a biological phenomenon all the nourishment things be undergoing. We be non sure about anything in the world yet the aging. We are approaching getting nearer to the remainder from the time of the be use up onwards. No living thing in the world has the ability to thwarting decease as it occurs sometimes naturally and sometimes accidently. ageing has varied dimensions like physical, psychological, and social. There are military some(prenominal) biological theories with respect to aging.Simple handicap, Non-programmed Aging and Programmed Aging, Autoimmunity opening, save radial theory, Telomerase possibility of Aging etc are some of them. This authorship briefly explains some of the biological theories of aging mentioned above. Aging Simple Deterioration surmise/ Wear and tear theory Simple Deterioration supposition argues that Aging is the accumulative result of universal deteriorative processes much(prenominal) as oxidation, molecular(a) footing, w ear and tear, or accumulation of adverse byproducts (Goldsmith, p. 3). Even though man and machine are two entirely different things, both of them have certain similarities in their functioning.No machine is able to function more than accompaniment period of time because of the wear and tear due to continuous work. akin way bodies of the living things are excessively undergoing continuous work which causes regaining to the divides of the soundbox. Even though we refill the fuels in the form of food, nutrients and water, in that respect are certain limitations for the body of the living things to survive for a nightlong period. In chemistry, to the highest degree of the chemical reactions yield products and by-products. These by-products are not ineluctably the intended one.Same way our body chemistry also yields different by-products which are harmful to our health and may reduce our life span. At the similar time we keepnot avoid the production of such by-products Aging Non-programmed Aging Theory Non-programmed theory of aging believes that aging is a passive result of an beings inability to better resist fundamental deteriorative processes. Moreover aging serves no purpose, is not an adaptation, and is not programmed (Goldsmith, p. 8). Our body is undergoing lot of changes and processes virtually in very seconds. Most of the activities indoors our body are beyond our control.For example, the pumping of personal line of credit by the heart is not done with our permission. We cannot stop any of the intrinsic functions. Everything inside our body is tuned to do certain things and any malfunctions occur inside our body may result in diseases. We are passive observers of our body functions. Aging Programmed Aging Theory Organisms are purposely designed and genetically programmed to age or otherwise limit life span because the declivity and life span limitation serves an evolutionary purpose (Goldsmith, p. 9). It is unimaginable to compute of a world without dying for living things.The earth might not be able to give shelter to all the living things if death was not there. So as part of the natural evolution process, temperament has programmed death natural and accidental to all the living things. August Weismann (18341914), the extensive German theorist and experimental biologist of the 19th century, was one of the startle biologists to use evolutionary arguments to explain aging. His initial idea was that there exists a specific death-mechanism designed by natural selection to eliminate the old, and consequently worn-out, members of a population.The purpose of this programmed death of the old is to clean up the living space and to free up resources for younger generations (Gavrilov &Gavrilova) Aging Autoimmunity theory This theory argues that our body has the design to reject its own tissues with the increasing age (Biological theories of aging, p. 21). For example, it is uncorrectable for the older people to take heavy foods because of digestion problems. Moreover, it is a fact that we are losing many hairs and skin and nail cells periodically. In other words, our body has the tendency to reject certain things as time passes.Free radical theory Free radical theory says that certain chemical compounds in our body does malign which accumulates to produce aging (Biological theories of aging, p. 22). Our body is just like a factory. We cognize that a factory can produce lot of industrial wastes and these wastes can sometimes affect the functioning of the factory. Same way our body also produces lot of harmful wastes. Some of them will be released through, stools, urines, and sweats. But most of the harmful wastes will be accumulated at some part of the body like Kidney. Kidney stone is a common disease occurring in many people.Kidney failures can cause problems to the blood purification purpose and death can happen. Telomerase Theory of Aging Discovered by scientists at the Geron Corporation, Telomerase Theory of Aging argues that telomeres (the sequences of nucleic acids extending from the ends of chromosomes), shorten every time a cell divides. This bring down of telomeres is believed to lead to cellular damage due to the inability of the cell to twin itself correctly. Each time a cell divides it duplicates itself a little worse than the time before, thus this eventually leads to cellular dysfunction, aging and indeed death (Kleinsek Ph.D. ) We have the ability to either accelerate or slow position the DNA damage. Those who have the ability to slow down the DNA damage may live much longer than those who have not such abilities. DNA can be repaired using artificial means up to certain extent which can delay the death. But under no circumstances, it is possible to avoid death as per the researches and findings till now. Conclusions Aging is a natural phenomenon incorporated to all the living things by nature in order to find spaces for the coming generation.Even tho ugh there are many biological theories are there with respect to aging and death, all of them nemine contradicente agree that death is inevitable.Works Cited 1. Biological Theories of Aging. 16 March 2010. 2. Gavrilov Leonid A and Gavrilova Natalia S. 2002. Evolutionary Theories of Aging and Longevity. 16 March 2010. 3. Goldsmith, Theodore. C. 2009. Theories of Biological Aging. 16 March 2010. 4. Kleinsek, Don Ph. D. Theories of Aging. 16 March 2010. http//www. antiaging-systems. com/agetheory. htm
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment