Aging And Its Effects On Humans Essay

A recent study was done at McMaster University in Ontario to see whether the signs of ageing were unavoidable. This study involves mice as test subjects that they were designed to age prematurely. The mice was put on a regimen of exercises, where the results have showed that it prevented the signs of ageing and even reverse the early ageing in the mice. The mice that remained inactive have grown with signs of weakened, ill, wizened, and bald. In contrast, mice that were provided with running wheels, they maintained in healthy muscles, brains, hearts, reproductive

Humans undergo several stages during their lifetime including growth, development, reproduction and senescence. Senescence is defined as the deteriorative biological changes that organisms experience as they age eventually leading to death. These changes include low metabolism, a weak immune system, memory loss, poor vision and loss of hearing. Senescence begins in humans during their post-reproductive years. However, gerontology research has shown that individuals who reproduce late have longer life spans compared to individuals who reproduce early. Nonetheless, it does not indicate that senescence is inevitable. All organisms experience senescence,

The greater longevity and improved health seen at older ages in many parts of the world represent one of the crowning achievements of the last century, but also present a significant

It is a known fact that all measures of physiological function decline in human aging. While genetics certainly play a role in the declining of physiological function with age, it can be argued that a fundamental part of aging can be reflected by chemical processes resulting in the appearance of harmful side products of the normal metabolism over time. When enzymes speed up reactions it is harder to slow them down. At the same time side reactions are constantly occurring and more and more unwanted side products are continuously being formed.

Normal aging is a gradual decline in certain processes (Gladyshev, & Gladyshev, 2016). The decline is not static and can be increased or reduced depending on choices made (Gladyshev, & Gladyshev, 2016). Changes commonly attributed to aging include declines in the five senses, most organ systems, appearance and brain function (Tully, 2016). The five senses include reduction in taste buds, smell, ability to hear high frequency sounds and speech discrimination, reduced ability to see in the dark and a reduction in tactile sensory (Tully, 2016). In the organ systems there is a reduction in the hearts response to work, bone mass, skin turgor, vital capacity in the lungs, renal and colon function (Tully, 2016). Most notable is the age-related changes

In order to better understand aging-associated diseases, it is first necessary to define what aging is. Aging is a complex, multifactorial process of harmful mutations in cells and tissues that are accumulated over time and result in an increased risk of disease and, eventually, death (Tosato, Zamboni, Ferrini, & Cesari, 2007, p. 401). Contrary to the belief that aging can be cured through medical advances, it is scientifically accepted that, while human life expectancy has increased, the human life span has remained largely unchanged for the past 100,000 years (Tosato et al., p. 401). Therefore, future developments in aging research ought to focus on addressing treatment and prevention of major aging-associated diseases that will

In the article,Natural compound reduces signs of aging in healthy mice,scientists from St. Louis School of Medicine in Washington figured out a way to stop cells’ reproduction of energy and how it ages humans.Scientists gave healthy mice a supplement of the natural compound of, NWN, to make up for the loss of energy. The natural compound also reduced the signs of aging.

Diet full of nutrients, like minerals and vitamins along with regular exercise, can delay the process of ageing. (Turner, 2003).

My DRI varied from my current age, to being a ten year old school ager and finally ninety year old elderly women. My recommended daily intake didn’t change much between my current self, compared to my elderly self. But it did look like I did look like I could lessen my calorie intake with my fiber and carbohydrates. But with my ten year old self it showed that I needed more fat total K calories. As I aged, changes occurred in my body that could affect my nutritional needs. The aging process affects my body's absorption of many nutrients. For example, I’m less able to absorb nutrients such as calcium. My body also excretes, and eliminates, more nutrients.

Aging and senescence, which is the decline in the physical functioning or performance of living organisms with age (Bergstrom, 2012), is also is studied using an evolutionary perspective. Research on aging has shown that it is a life trait that has been shaped over the years by natural selection (Neese, 2008). Aging is a process that occurs due to an accumulation of molecular damage that

The age-related reduction of metabolism, the termination of growth and development processes and reduction of cellular self-renewal cause the most typical syndrome of aging – age-related dystrophy of organs and tissues. It is accompanied by a decrease in muscle strength, decrease of organ parenchymal functions, thinning of mucous membranes and skin, atrophy of glands, hair follicles and many other manifestations. Atrophy of capillaries causes reduction of tissue nutrition, age-related hypoxia and sclerosis.

A recent study that was published in the Proceedings of the National Academy of Sciences of the United States of America (http://www.pnas.org/content/early/2015/07/01/1506264112.abstract) sought to observe aging in young adults for the purpose to see how aging affects bodily functions in order to create longer health spans, less health complication contractions. But also to see if antiaging

The way God created us as humans is a life cycle where eventually late adulthood comes with the biology of aging. Santrock (2013) describes five different theories of why humans age (p. 541). The evolutionary theory explains that aging is more of a natural selection process, and diseases occur in the elderly because they “would have been eliminated” if they were in younger people (Santrock, 2013, p.541). Cellular clock theory describes how cells get tired of dividing after they have been reproducing for so long (Santrock, 2013, p.541). Free-radical theory explains when “cells metabolize energy the by-products include unstable oxygen molecules known as free radicals” (Santrock, 2013, p.541). The unstable oxygen molecules can damage DNA and other structures inside the cell (Santrock, 2013, p.541). Mitochondrial theory describes how aging occurs because of the mitochondria essentially wearing out and becoming less efficient (Santrock, 2013, p.542). Mitochondria are the cell’s “power house,” and they convert energy inside the cell (Bailey, 2008). The last theory, hormonal stress theory, illustrates the effects of stress, especially long term stress, on aging (Santrock, 2013, p.542). Stress released hormones which depress the immune system making people more susceptible to disease (Santrock, 2013, p.542). There are many theories about why human’s age, and all of them may be true, but regardless aging is inevitable and so are its effects.

Aging is the process of becoming older, as we age, multiple mutations occur that concern all the processes of aging well as it compromising a number of different genes. There are many theories of biological aging, such as the Cellular Aging Theory, Immunological Theory, and the Wear and Tear Theory. The Cellular Aging theory describes the process of aging in which cells slow their number of replication, thus giving each species a “biological clock that determines its maximum life span” and how quickly one 's health will deteriorate(Hooyman, 42). After a certain number of years, each cell which follows an apparent biological clock starts to replicate itself less, thus the specific individual or species slowly deteriorates. This theory gives

Causes of aging are very uncertain. Besides, there are several factors which predispose an individual to premature aging. Current theories suggest that this process occurs to due to cellular damage such as DNA oxidation by free radicals causing