old age

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old age:

see geriatricsgeriatrics
, the branch of medicine concerned with conditions and diseases of the aged. Many disabilities in old age are caused by or related to the deterioration of the circulatory system (see arteriosclerosis), e.g.
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old age

the last part of the individual LIFE COURSE, associated with declining faculties, low social worth and detachment from previous social commitments. It is a social construct rather than a biological stage, since its onset and significance vary historically and culturally. See also AGEING, GERONTOLOGY.

Old Age

 

the period of life that inevitably sets in after middle age and is characterized by significant metabolic, structural, and functional changes in organs and systems that limit the adaptability of the body. Old age is a result of the dynamic process of aging. According to one system of age classification, 75–90 years of age is considered old age, and over 90, advanced old age.

An individual’s physical appearance, work capacity, and mental abilities change with old age, as does the course of many diseases. The skin becomes thinner and less elastic, and wrinkles and pigment spots appear. The hair turns gray and falls out. Visual acuity decreases, and lenticular opacity develops, often resulting in the formation of cataracts. An individual may grow shorter, and curvature of the spine is common. Joint mobility is limited, and bones become fragile and lose calcium. Mental performance declines, and a person becomes more easily fatigued, less able to recall recent events, and subject to sleep disturbances.

Because of their adaptive mechanisms, some old people can maintain a high level of intellectual activity for a long time and remain alert and creative. With old age, organs and tissues are less influenced by neural factors but are more sensitive to humoral influences. Age-related changes in the vascular wall and in protein and lipid metabolism contribute to the progression of atherosclerosis. Changes in digestion may cause vitamin deficiency. The rate of aging and extent of changes in organs and tissues vary with each individual. (For changes that occur with aging on the cellular level and in functional systems see.)

V. V. FROLKIS

old age

[′ōld ′āj]
(geology)
The last stage of the erosion cycle in the development of the topography of a region in which erosion has reduced the surface almost to base level and the land forms are marked by simplicity of form and subdued relief. Also known as topographic old age.
References in periodicals archive ?
Our results showed that advanced age was significantly associated with higher tumour grade, while patient gender was not significantly associated with tumour grade nor muscle-invasion status.
In Canada, the proportion of live births to women 30-39 years old has risen from 23.6% in 1982 to 45.9% in 2005.2 However, the advanced age of the mother has shown a relationship with decreased fertility and increased risk of still birth, preterm live birth, low-birth weight, and adverse pregnancy outcomes.3-5 Several studies have found that pregnant women over 35 years old had unfavorable pregnancy outcomes and are generally considered as an age cut-off.1-5
In our study, advanced age and prolonged mechanical ventilation were found to be significant risk factors for delirium.
Advanced age pregnancy is still a high risk affair.
Advanced age, female gender, low Advanced age, female gender, low socioeconomic status, limited functional status (decreased ability to perform tasks associated with activities of daily living), and the presence of dementia are among the most frequently reported reasons that lead older persons to be admitted to a nursing home (Branch, 2000; Department of Nursing Home Services, 2011; Kao, Travis & Acton, 2004).
The known risk factors include advanced age, concomitant nephrotoxic medicinal products, concomitant diuretic therapy or dehydration occurring after administration of zoledronic acid.
Women at high risk of fracture include those who have had an osteoporotic fracture, advanced age, tobacco use, consuming more than two alcoholic drinks per day, long-term steroid use, family history of fracture, or who are unable to take other available osteoporosis therapies.
"From a basic humanitarian point of view, it is obvious that his situation requires mercy," the Russian ministry said in a statement, adding that Aziz suffered from health problems and was of an advanced age.
High plasma levels of vitamin E forms and reduced Alzheimer's disease risk in advanced age. Journal of Alzheimer's Disease, 2010; 20(4): 1029-37.
I couldn't believe how good he still is at his advanced age (sorry, Lance!).
WITH the recent winning exploits of Caracciola and The Tatling showing horses can still be competitive at an advanced age, I wonder whether were the Flat calender to incorporate a series of races restricted to horses of, say, ten or older, more old favourites might race on.

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