Aging theories
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Aging theories
I believe the wear and tear theory of aging most accurately reflects the aging process in the human body. The theory gives practical pieces of evidence that we witness daily. The human body wears and tears during human activity and experiences repairs. In many instances, we have experienced bruises after hitting objects or falling, which we regard as wear and tear. However, we heal after a few days. The bruised part just like a damaged part of a car gets a scar. That implies the repair is never perfect. Hip joints and knee joints are good examples of how the theory of tear and wear explains aging. The joints suffer damage with time, which leads to conditions such as osteoarthritis. The cartilages in joints experience disintegration. Additionally, if the disintegration of cataracts in the human eye can lead to loss of vision, then the theory of wear and tear plausibly explains aging in any other part of the human body because of the use and reuse.
I believe the autoimmune theory least accurately reflects the aging process for the human body. The only theoretical explanation given to support autoimmune theory is the way the body might attack its own cells. This is because the body cannot distinguish its tissues from foreign tissues after the immune system weakens. While there might be some truth in the theory, I have seen some old individuals who are still healthy and do not suffer from frequent opportunistic infections. That implies the immune system of such individuals might still be strong. Therefore, one cannot directly attribute the aging in such individuals to decline in their immune system or autoimmune theory. Last, yet importantly, the autoimmune theory of aging unlike other biological theories of aging has only a few facts that are narrow in scope.