The Effects Of Ageing Essay

2882 words - 12 pages

The Ageing Process
“How Our Bodies and Minds Change”
Aging is a process that concerns us all. The increasing armamentarium provided by molecular biology and other techniques has allowed greater understanding of some of the processes involved. Numerous definitions of aging exist; an acceptable and commonly used definition is that aging is the total of all changes an organism undergoes from its conception to its death, including development, maturation and adulthood. There are many theories about how our bodies and minds change as we age, but no matter how much research or theories have been formed, one thing remains true is that our bodies and minds does, and will, change with age and one ...view middle of the document...

However, large-scale linkage studies of long-lived families, longitudinal candidate-gene association studies and the development of analytical methods provide the potential for future progress. The age-related changes of a large number of genes were investigated using gene microarray technology in prefrontal cortex samples from human subjects aged 13 to 79 years. The data from this study identified life-long progressive changes in expression with age in approximately 7.5% of genes tested, while expression levels for the large majority of genes were strikingly unchanged throughout adult life. ( Lee CK., Weindruch R., Prolla TA. Gene-expression profile of the ageing brain in mice. Nat Genet.2000;25:294–297.)
Linkage analysis is the traditional means of genetic mapping in humans. In longevity studies, genome-wide linkage scans are often hampered by a lack of availability of multi-generational DNA from long-lived individuals, and by the phenotypic heterogeneity of increased lifespan as a trait. In addition, traditional linkage studies require very large sample sizes to identify genetic regions that are involved in complex multifactorial phenotypes such as lifespan. Human lifespan is of vital importance, both for individuals and society. Familial recurrence patterns for longevity, has given cause for optimism that it will be possible to identify other genetic variants that affect lifespan. While there progress in determining the longevity of humans, there are still illnesses and diseases that must be addressed to determine if they plays a role in our physical and mental changes as we get older.
Loss of memory and of cognitive function affects people worldwide. Such loss may be the result of different progressive neurological disorders of the brain. It affects both men and women and is common in the elderly. While it’s true that certain brain changes are inevitable when it comes to aging, major memory problems is not one of them. That’s why it’s important to know the difference between normal age-related forgetfulness and the symptoms that may indicate a developing cognitive problem. Memory loss may be characterized as the difficulty or failure for immediate or delayed recall. As we grow older, we experience physiological changes that can cause glitches in brain functions we’ve always memory loss, the first type of memory loss relates to the failure to recall, within a few seconds, a specific object. Memory lapses can be frustrating, but most of the time they aren’t cause for concern. Age-related memory changes are not the same thing as dementia. This type of memory loss can be helped by supplementing with acetyl l-carnitine, a vitamin that will combat this initial short term memory loss. The second type relates to failure to recall a specific object, within a few minutes. Amnesia is an extreme condition in loss of memory. Amnesia, meaning "forgetfulness"; is a deficit in memory caused by brain damage. Essentially, amnesia is loss of...

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