Why do we age ? The maximum limit of human life is generally thought to be 110 to 120 years. However, the vast majority of the population only lives to approximately 2/3 of this upper limit. The factors involved stem from a variety of areas including genetics, environmental, psychosocial, and lifestyle. The process of aging and the study of the relative involvement of these determinants has only recently become an area of intensive research and as a result little …showed first 75 words of 686 total…

…showed last 75 words of 686 total…state will theoretically exist forever proved no work is done on the system. However, this seems to represent only a laboratory curiosity as it is extremely unlikely that these conditions would occur in nature. Again, biology in its enormously complex refuses to be encompassed by our limited definitions and as such its best to consider aging as a widespread but not universal property as we have yet to establish bacteria and monera as aging organisms.