UrbanArcologist t1_isywrtu wrote
Reply to comment by SemanticTriangle in Natural Selection Driven by the Black Death Linked to Modern-Day Autoimmune Disease: Analysis of DNA from over 200 remains shows that the Black Death selected for immune gene variants that are also risk factors for autoimmune conditions like Crohn's disease. by rjmsci
They may help fight diseases of all kinds critical to mature enough to reproduce. After that natural selection isn't a factor. Can't imagine life expectancy was very high in the dark ages.
666pool t1_isz40gr wrote
It actually was once you got through childhood.
Du_ds t1_iszcoco wrote
If you lived to adulthood, you could expect a much longer life than average because the average is so skewed by all the dying in childhood.
666pool t1_iszqtme wrote
That’s not what I’m saying at all. Even the Romans had an average life expectancy of like 70+ if they made it to adulthood, which is not terribly dissimilar from today.
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