The Evolution of Aging: How New Theories Will Change the Future of Medicine
Azinet, 2006 - 189 Seiten
Why do we age? Scientists have been baffled by this question for centuries and disagree regarding even the general nature of aging. Is aging the result of fundamental limitations that apply to all living things, or are organisms designed by nature to age because a limited life span conveys some advantage? All of the theories either fail to fully explain observed animal characteristics or conflict with generally accepted evolution theory. This issue has potentially enormous implications for medicine. If aging is the result of fundamental and unalterable forces of nature, then anti-aging medicine is impossible and anti-aging research is futile and foolish. If aging is imposed by an evolved life span regulation system, then research will likely reveal means for altering the operation of the aging mechanism and thereby improve the treatment of many age-related diseases and conditions. This book provides a historical review of biological aging theories including underlying evolution and genetics issues and describes exciting recent discoveries and new theories that are causing renewed interest in aging-by-design. The author discusses Darwin's theory of evolution as well as more recent proposed modifications such as the selfish gene theory, evolvability theory, and group selection in connection with their effects on aging theory. A chapter is devoted to describing the aspects of modern genetics that have implications for evolution theory including the application of digital information theory to genetics.
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New Theories of Evolution and Aging
Attitudes about Aging
Conclusions Implications for Medicine
Appendix Aging Attitudes Survey
accumulation of damage actually adaptive theories adverse aging genes aging mechanism aging theory animal’s antagonistic pleiotropy antagonistic pleiotropy theory anti-aging research appear average behavior benefit biologists biology breeding calendar age caloric restriction cancer cells changes chromosomes complex organisms Darwin’s mechanics Darwin’s theory Darwinian deletion descendents error eventually evolution theory evolutionary evolved characteristic example factors genetic code genetic data genetic diseases genome group selection heart disease hormones human increase individual fitness inheritance introns involved junk DNA major mammals mating ritual maximum life span Medawar’s meiosis mice mutation natural selection non-aging animals older organism’s orthodox Darwinism percent population predators presumably problem produced progeny progeria programmed death propagate protein random recombination relatively reproduction result salmon scientific selfish gene theory senescence sequence sexual sexual reproduction signals similar SNPs survival symbols telomerase telomeres tend theories of aging theory of natural tion traditional theories traits treatment variation wild