Theories Of Aging

Theories Of Aging

Aging is a process that continues to this day has not fully investigated. Why do we age? About this there are several theories, some attributed to the aging of the genetic code, other wear-cells due to internal and external influences, for example. effects of ultraviolet radiation, diet and metabolic products, harmful free radicals, etc.. None of the theories but as yet does not give a definitive interpretation of the changes that occur in aging. The reason for this lies in the complexity of this process, which varies from person to person and even from one physical system to another.

On average, viewed chronologically men experience their peak in the late twenties and women in mid-thirties. Then the body is fully mature, it is the height of his power and most people have a keen mind. Somewhere between 28 and 36 the age most people reach a turning point, when it shall cease to develop and begin to get old.

Statistically: physiological functions and memory capacity declining over the years. Statistically: physiological functions and memory capacity declining over the years. The quality of each biological function in each decade of life after 35. The good news is that certain functions, such as mental clarity and intelligence quotient, some people do not show almost no decline. There are people who set the functionality of the 35 and 75 year even developed.

Most professionals who deal with aging, agrees that the aging of the overall result of various influences throughout his life. These impacts include environmental factors, heredity, culture, diet, physical activity, etc.. So far, the most current theory is thus a mixture of specific theories, the most important will be presented below.

Evolutionary theory

For all types of organisms, the conservation of the species of primary importance, and the course of evolution to develop and maintain the mechanisms that allow you to have a productive adult specimens of fertile offspring, which will continue to row. These mechanisms are conserved due to selective pressure. This is therefore the strongest in the fertile period, the age is greatly reduced, so from that point of view, this period is irrelevant. And since this period is not as important as the mechanisms that maintain the vitality of the organism, the elderly are not as accurate as in young people.

The theory of programmable genetic

Programmable genetic theory says that there are genes that determine the maximum number of certain types of cell division in their life. For example: fibroblasts, cells that are part of the connective tissue, producing collagen and participate in the process of wound healing, it can double as an infant 60x, in the elderly is only 40x. As a result, aging reduces the number of cells in a variety of vital functions.

Neuroendocrine theory

Neuroendocrine system is a system integration of the nervous system and endocrine (hormone system), where the activity of the nervous system regulates the release of certain hormones. Through this system of regulation has many vital functions.

Neuroendocrine theory of aging states that aging comes to worse the nervous system and may lead to poorer control of hormone release. A typical example is the decline in growth hormone, which has many features associated with the restoration of body tissues and metabolism. Extremely important role in restoring tissue metabolism and also have sex and thyroid hormones. The interconnectedness of life (a hormone can stimulate or inhibit the secretion of other hormones), a hormone imbalance usually leads to deviation from the normal quantities of all other inter-dependent hormones.