Biological and physical process of aging

Genetic mutations occur and accumulate with increasing age, causing cells to deteriorate and malfunction. Telomerase cannot completely prevent telomere shortening after extensive stem cell division either, providing a putative mechanism for the timely limit of stem cell replicative history and subsequent progressive decay in the maintenance of organ homeostasis at old ages 18 There are wide individual differences in the level of sexual activity in both males and females.

It will help with muscle strength and function. The mobility of joints diminishes with age and the incidence of arthritis increases. Digestive system Loss of teethwhich is often seen in elderly people, Biological and physical process of aging more apt to be the result of long-term neglect than a result of aging itself.

Between the ages of 45 and 60 only about 5 percent of males reported loss of sexual activity. The gradual loss of elasticity increases with resistance to the flow of blood so that blood pressure may increase.

Aging is the result of a sequential switching on and off of certain genes, with senescence being defined as the time when age-associated deficits are manifested. Thyroxinethe hormone secreted by the thyroid glandregulates the level of activity of all the cells of the body.

Fluid and cartilage that line the joints can decrease or wear away with age. The amount of blood pumped by the heart diminishes by about 50 percent between the ages of 20 and 90 years.

Modern Biological Theories of Aging

Some medicines might make you constipated. Cancer, aging and cellular senescence. But with patience, care, and smart lifestyle changes, we can make the most of our bodies as we age.

In particular, damage to mitochondrial DNA might lead to mitochondrial dysfunction. This theory, which was first introduced by Dr. When it comes to your hearing, you could have a hard time following conversations in a crowded room or hearing at high frequencies.

Above the age of 50, however, there is a gradual reduction in the ability to perceive tones at higher frequencies.

Even in the absence of detectable disease, the heart undergoes deleterious changes with advancing age. Values for cigarette smokers are, on the average, about equal to those of nonsmokers who are 10—15 years older.

The 70 women she interviewed reported friendships, of which only 3. Denham Harman 1011proposes that superoxide and other free radicals cause damage to the macromolecular components of the cell, giving rise to accumulated damage causing cells, and eventually organs, to stop functioning.

While we generally appreciate our elderly, we have a culture oriented toward youth, as evidenced by the abundance of television characters in their 20s and lack of those in their older years.

Human aging

Nucleic acids can get additional base or sugar group; break in a single- and double-strand fashion in the backbone and cross link to other molecules. In addition, an individual adapts to gradual impairments in one sensory organ by using information available from other sense organs.

But prayer and other private devotional activities remain significant for many of them. The ability of the skin to take up slack and remain closely adherent to the underlying structures is due to the presence of fibres of the proteins elastin and collagen.

American Behavioral Scientist, 39, —Components of Biological Aging. 1. Deleterious- effect that the process of aging has on the body. Age weakens the body, making it more vulnerable to illness. EX: Weakened sphincter muscles-gerd 2.

Internal- some believe that true aging begins from within. Coping with physical changes of aging 3. Adjusting to retirement & reduced income 4.

Free Essay: The aging process is difficult to analyze because of the way that the body’s organ systems work together. The breakdown of one structure will. The Process of Aging -Biological Aging-Part IV (11/9/06)- For many years scientists have been aware of the fact that in cutting calorie intake, the biological forces of the aging process can be slowed down.

Human aging: Human aging, physiological changes that take place in the human body leading to senescence, the decline of biological functions and of the ability to adapt to metabolic stress. In humans the physiological developments are normally accompanied by.

Aug 01,  · Davidovic et al discuss the role of genetic instability in aging and dynamics of the aging process. 2) Endocrine Theory. Biological clocks act through hormones to control the pace of aging. The aging process is difficult to analyze because of the way that the body's organ systems work together.

The breakdown of one structure will ultimately affect the function of others. The medical field of gerontology deals with examining the biological changes of aging, both passive and active, that.

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Biological and physical process of aging
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