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Quoting a great biologist Peter Medawar : It is by no means difficult to imagine a genetic endowment which can favor young animals only at the expense of their elders; or rather at their own expense when they, themselves, grow old. A gene or combination of genes that promotes this state of affairs will, under certain numerically definable ...


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Your body knows it should die. Science discovered the details for us to understand. It is called apoptosis: pre-programmed cell death. The DNA in our cells is encoded to replicate only a certain number of times. Thus organs wear out as the cells are not being faithfully replaced (there are other factors to aging as well). [link] ...



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