Definition of old age, Biology

Assignment Help:

Definition of old age?

The exact timing of the onset of the ageing process cannot be ascertained because the effect of age varies among different individuals. However, the chronological age is most often used by gerontologists to delineate the aged. A cut-off age of 60 years is taken for classifying people as 'old' and is used for census up poses. Many nations follow the cuts off age at 60 years while many developed countries and United Nations take the cut-off age at 65 years to designate the elderly.

Elderly represent the fastest growing segment of populations throughout the world.Socio-economic development along with better health facilities and a wider spread of medical care including primary health services have raised the life expectancy. The total number of persons above 60 years of age was 43.1 million in 1981, which has risen to 56.7 million in 1991. At present, the elderly constitute 7.7% of the total population i.e. approximately 76 million are projected to burgeon to about 150 million (12 percent) by the year 2025. The elderly population is a very heterogeneous group who has varying problems and needs. On classifying the elderly into 'young old' (i. e, 60 to 74 years) and 'old old' (i.e. 75 years plus), it was observed that 'young old' were increasing at a much faster pace (5.6%) till 2001 as compared to 'old old' (1.2%) in India. Globally, maximal growth is recorded in the latter and not in the former category of elderly. Men outnumber women in young old age groups but the sex ratio is in favour of women in the higher old ages.


Related Discussions:- Definition of old age

Explain proteins as lubricants, Explain Proteins as lubricants? The muc...

Explain Proteins as lubricants? The mucous of the respiratory tract, oral cavity, vaginal tract and the rectal cavity reduces the irritation which might be caused by materials

Biochemistery., how i prepare my best assignment on DNA Polymerase 1 2 and ...

how i prepare my best assignment on DNA Polymerase 1 2 and 3

Enumerate about the minerals and rocks, Minerals and Rocks      A mine...

Minerals and Rocks      A mineral is an inorganic body, formed by the process of nature, usually having a definite composition. If formed under favourable conditions, it has a

Determine a testable hypothesis, A friend of yours suggests that the origin...

A friend of yours suggests that the origin of life on earth is extraterrestrial in origin (an idea known as panspermia). Can you propose a testable hypothesis to determine if this

What are the target organs upon which insulin and glucagon, What are the ta...

What are the target organs upon which insulin and glucagon act? Glucagon mostly acts upon the liver. Insulin acts in general upon all cells. Both also act upon the adipose tiss

Process of asexual reproduction, What name is given to the population of ge...

What name is given to the population of genetically identical offspring which result from a process of asexual (vegetative) reproduction?   The population of genetically id

Symmetry, what is the differences between spherical symmetry and radial sym...

what is the differences between spherical symmetry and radial symmetry

Nutritional management in inflammatory bowel disease, Q. Nutritional Manage...

Q. Nutritional Management in Inflammatory Bowel Disease? Adequacy of nutritional needs and minimizing stress on the inflamed or narrowed segment of the bowel are the main princ

Some common air pollutants, The major air pollutants are: (i)     Carbo...

The major air pollutants are: (i)     Carbon monoxide, CO (ii)   Nitrogen oxides, (NO)x (iii) Sulphur oxide, (SO)x (iv) Ground level ozone (O3) (v)   Hydrocarbons (

Osmotic and ionic regulation, Osmotic and Ionic Regulation The  ammono...

Osmotic and Ionic Regulation The  ammonotelism, ureotelism and uricotelism are the adaptations of the animals for the removal of toxic nitrogenous wastes and thereby maintain

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd