Aging is a paradox when one considers evolutionary biology. Evolution is driven by natural selection, where advantageous traits are favoured over time and passed onto the next generation. But does aging fit into this equation?

Aging is a natural phenomenon that affects all living organisms and can essentially be defined as an increase in mortality with age. As we grow older, our bodies undergo various changes, both internally and externally. But what is the purpose of aging? Is it simply a side effect of our biological processes, or does it serve a greater purpose? In this video we’ll do just that and deeply consider a more recent proposal that aging evolved as a pathogen control strategy. there will be 3 parts: a primer on evolution and theories of aging, why they could, most likely be wrong while i introduce this newer theory, and three, evidence for the pathogen control strategy and why we should even care about all this.

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TIMESTAMPS:
Intro - 00:00
Theories of aging - 01:09
Pathogen control strategy - 03:45
Thoughts - 07:00

References:
Lidsky, P.V., Yuan, J., Rulison, J.M. et al. Is Aging an Inevitable Characteristic of Organic Life or an Evolutionary Adaptation?.
Biochemistry Moscow 87, 1413–1445 (2022). https://doi.org/10.1134/S000629792212...
Could aging evolve as a pathogen control strategy? - https://doi.org/10.1016/j.tree.2022.0...

Please note that The Sheekey Science Show is distinct from Eleanor Sheekey's teaching and research roles at the University of Cambridge. The information provided in this show is not medical advice, nor should it be taken or applied as a replacement for medical advice. The Sheekey Science Show and guests assume no liability for the application of the information discussed.

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