Biological Theories Of Aging
Research to define the theories that cause aging has been on the rise in the recent past. Despite the extensive research, it is disappointing to note that the theories that have been raised and discussed do not satisfactorily explain the many questions surrounding aging. Some of the most asked questions include why aging occur? What are the indicators of aging? Can aging be controlled? When does aging start and is there a limit the extent of aging that one can get to? The researchers about aging have had a positive impact on the advancement of molecular biology. It has led to some theories that could be used to make people remain younger. These theories are however not very much effective and can only help in a slight way. For example, some therapies that can be applied on individuals and make them look younger than their real age. They, however, do not stop or slow down the aging process. Being involved in exercises helps keep your body fit and is believed to slow aging. Below are the two most recent theories of aging.
The Programmed Theory
This theory proposes that aging follows a set biological timetable. The time in the time table when the effects of aging start being visible is referred to as senescence. This theory is subdivided into three sub theories. One is the programmed longevity that says that the human body will age because genes keep on switching sequentially. This makes them unstable and age. It is then believed that the biological timetable is controlled by some hormones. This is per the endocrine theory. The third theory is the immunology theory. It dictates that the human body is protected from diseases by the immune system. This system weakens with time leaving our bodies exposed. The body becomes vulnerable to diseases and weakens leading to aging.
The Damage and Error Theory
This theory seeks to explain how the human body is affected by the environmental factors. These factors contribute to aging either directly or indirectly. Wear and tear is the first sub theory that is associated with the environmental factors. As the body organs are in constant use, they wear and sometimes it is difficult for them to function as supposed. This contributes to aging. The wear or tear of the organs will depend on how actively they are used. This will depend on the organism’s basal metabolic rate. There are also some elements that exist freely in the environment and cause death some cells in the body. Accumulation of these cells leads to aging.