Why will we age? Is getting old inevitable? Will advances in medical data enable us to extend the human lifespan past its current limits? Because growing old has long been the one irreducible reality of human existence, these intriguing questions come up more often in the context of science fiction than science fact. But latest discoveries in the fields of cell biology and molecular genetics are critically difficult the belief that human lifespans are past our control.
With such discoveries in thoughts, noted cell biologist William R. Clark clearly and assuredly describes how senescence begins at the level of individual cells and how mobile replication may be sure up with ageing of the entire organism. He explores the evolutionary origin and performance of getting old, the mobile connections between growing old and cancer, the parallels between mobile senescence and Alzheimer's illness, and the insights gained through studying human genetic disorders--corresponding to Werner's syndrome--that mimic the symptoms of aging. Clark also explains how discount in caloric consumption may actually assist improve lifespan, and the way the damaging effects of oxidative elements within the physique could also be restricted by the consumption of antioxidants found in fruits and vegetables. In a remaining chapter, Clark considers the social and economic features of living longer, the implications of gene remedy on senescence, and what we might find out about getting older from experiments in cloning.
This is a extremely readable, provocative account of among the most far-reaching and controversial questions we're likely to ask in the subsequent century.
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