Age Related Physiological and Psychological Behavior

Abstract

DESCRIPTION Aging is a physiological deterioration in physiological functions that results in age related frailty, disability and disease leading ultimately to death. Aging causes increase in age specific death rate. Such aging process is widespread among all species. Some organisms like Hydra showed no signs of aging at all. Understanding of aging tells us about why and how aging evolved.Unknowing view is that aging is driven by genetic programme directly leading to decline of the body. Advantages of the aging is that it worn outs aged individuals from the competing resources with their progeny. Firstly evidence from natural populations proves that aging is a significant contribution to mortality in the wild. So with no doubts an individual lives long to experience senescence more vulnerable to predators.Wild populations indicate that mortality during the early and middle periods of life is usually so that only a small fraction of individuals survives loud enough