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HLTC22H3 (110)
Anna Walsh (54)

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Health Studies
Anna Walsh

HLTB01H3S: Health, Aging and the Life Cycle Department of Health Studies University of Toronto at Scarborough Winter 2010 Instructor: Anna Walsh. Term: Winter 2010 Mondays 3 p.m. - 5 p.m. Lecture Room: Room AA112. January 182010. Theories of Aging. A&G: Chapter 3- Theories of Aging: Biological and Psychosocial Theories. Gerontology-has provided facts that are based on systematic observations that may be loosely grouped into models, but rarely provide any conclusive theory. Models and theories are often times not carefully distinguished from one another in the literature and create this ongoing problem. Aging is usually defined as the progressive loses of biological function accompanied by decreasing fertility and increasing mortality with advancing age. This process usually occurs after sexual maturation and continues up to the time of maximum longevity (life span) for members of a species. Death is the final event. Although age-related changes occur in every individual in a given species, different species are known to age at different rates. Note: The rate of aging can vary between individuals of the same chronological age. Lifestyles also exert additional influence on the aging process. Aging is caused by the accumulation of damage to the cells. Some of the causes are unavoidable such as ultraviolet radiation, free radicals and genetic effects, while others involve environmental and behavioral influences. Many theories and models have been advanced to better explain the aging process that reflect both the genetic and environmental factors associated with aging. Theories of Aging Aging processes occur at the biological, psychological and social levels. There are different theories that reflect each discipline with no general consensus. Although we are beginning to appreciate the underlying causes and the factors that regulate or govern the rate of aging, we are still not certain about why we age. Bengtson, Rice and Johnson (1999) They argued that different theories emphasized different aspects such as: characteristics of the aging population, the development or aging process and the way in which age is incorporated into elements of the social structure. 1
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