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Biology of Aging - Biogerontology, Research Approaches, Genetic Analyses, Model Systems, Cell Senescence, Hormonal Changes, Nutrition

Medicine EncyclopediaAging Healthy - Part 1

The phenomenon of aging means quite different things to different people. Most gerontologists would agree that aging is a process, or set of processes, of gradual development and then decline that characterize the life span of an organism. Beyond that, there is very little agreement, and indeed there are many who would argue with this description. In part this lack of agreement is the result of the fact that aging is a very complex phenomenon involving biological, behavioral, and social factors. These various and very varied realms interact to produce the life span trajectory of each single organism on the planet. Adding to this complexity are the cultural, political, and economic assumptions about aging that shape the ways individuals and their institutions think about the "problems of aging."

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