By Harold Loyola
Everyone gets older, it is an innate part of life that is impossible to run way from. Even though aging is a universal phenomenon, many people try to avoid it or postpone it in any way they can; some people even resort to surgery to keep themselves looking young. But why does everybody age? Even though there is not a concrete answer to this question as of yet, but over the years experts have managed to come up with several theories that could explain this irritating incident.
An Explanation of Orgel's Theory of Error
In 1963 Orgel's hypothesis was developed and is a theory related to as why people age. Orgel hypothesized that errors in DNA occurred as a result of problems within the transcription process. The theory he developed says that such errors eventually led to the death of the cell, that contributed to the cause of aging. Although this particular theory commonly disregarded today, it is still viewed by scientists as being on the same field as modern research today.
Relationship of Metabolism
In 1908 Max Rubner discovered the relationship between metabolic rate, body size and longevity, and it was the first contribution of many others to the energy consumption hypothesis. The idea behind this thought was that all animals were born with a specific amount of expendable substance or energy, and that their longevity was based on how fast they used it up.
This theory eventually became known as "rate of living hypothesis," that linked the speed of metabolic rate to the speed of biochemical activity to the rate of aging.This is supported by numerous studies, and is in agreement with the observation that mammals with long lifespans experience delayed development.
The experiments done over the years have however presented many conflicting information, with one study indicating that mice with high metabolic rates actually live longer than the mice with lower metabolic rates. In addition, there is no real correlation between the maximum lifespans and metabolic rates. These days, however this idea is considered to play a significant role in aging and anti-aging products.
Other Explanations
Other theories that explore the reasons behind aging include DNA damage and the Free Radical theory. The former hypothesizes that DNA mutation or accumulated damage leads to aging, while the latter says that the presence of oxidants (which can come from multiple sources, such as ultra violet rays) causes people to age. While neither of these ideas is thought to be entirely true, elements of both are important to current scientific research regarding aging theories.
A Possible Alternative
Even though the scientific theories of today or of the past has been truly accepted as a concrete explanation for aging, they have indeed provided us the essential research behind modern scientific experiments. Eventually though, perhaps today's or tomorrows experts will come up with the answer, and be able to find a way to slow the process down.
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