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A major influence on the theory was Emil Kraepelin, lining up degeneration theory with his psychiatry practice. The central idea of this concept was that in "degenerative" illness, there is a steady decline in mental functioning and social adaptation from one generation to the other.
In biology, a subculture is either a new cell culture or a microbiological culture made by transferring some or all cells from a previous culture to fresh growth medium. This action is called subculturing or passaging the cells. Subculturing is used to prolong the lifespan and/or increase the number of cells or microorganisms in the culture. [1]
In criminology, subcultural theory emerged from the work of the Chicago School on gangs and developed through the symbolic interactionism school into a set of theories arguing that certain groups or subcultures in society have values and attitudes that are conducive to crime and violence.
The two theories; non-adaptive, and adaptive, are used to explain the evolution of senescence, which is the decline in reproduction with age. [8] The non-adaptive theory assumes that the evolutionary deterioration of human age occurs as a result of accumulation of deleterious mutations in the germline. [8]
Biogerontology should not be confused with geriatrics, which is a field of medicine that studies the treatment of existing disease in aging people, rather than the treatment of aging itself. There are numerous theories of aging, and no one theory has been entirely accepted.
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Gerontology (/ ˌ dʒ ɛr ən ˈ t ɒ l ə dʒ i / JERR-ən-TOL-ə-jee) is the study of the social, cultural, psychological, cognitive, and biological aspects of aging.The word was coined by Ilya Ilyich Mechnikov in 1903, from the Greek γέρων (gérōn), meaning "old man", and -λογία (), meaning "study of".
The discovery was a revolutionary breakthrough in aging research, demonstrating that the aging process could be controlled in the laboratory, and sparked more research into the molecular biology of aging. [59] [60] 1995 Method for detection of senescent cells using a cytochemical assay. [61] 1997 The absolute record for the duration of human life.