Source https://www.fightaging.org/archives/2023/11/an-evolutionary-model-in-which-aging-is-selected/
The present consensus on the evolution of aging is that it is an inevitable side effect of natural selection – aging isn’t selected for per se, it is a byproduct. Evolution favors reproduction earlier in life rather than later in life, particularly in environments with high mortality due to disease or predation, and thus there is little pressure to select for mutations that enhance long-term maintenance of the body and brain. Looking at the examples of biology around us, the outcome of this process is near always biological systems that fail over time, in which their structure is optimized for early life success at the cost of late life health. This state of affairs is called antagonistic pleiotropy, that many (even most) biolo…
Source https://www.fightaging.org/archives/2023/11/an-evolutionary-model-in-which-aging-is-selected/
The present consensus on the evolution of aging is that it is an inevitable side effect of natural selection – aging isn’t selected for per se, it is a byproduct. Evolution favors reproduction earlier in life rather than later in life, particularly in environments with high mortality due to disease or predation, and thus there is little pressure to select for mutations that enhance long-term maintenance of the body and brain. Looking at the examples of biology around us, the outcome of this process is near always biological systems that fail over time, in which their structure is optimized for early life success at the cost of late life health. This state of affairs is called antagonistic pleiotropy, that many (even most) biolo…
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