Why didn't humans evolve through allergies?

22 May 2011

Question

Why didn't humans evolve through allergies?

Answer

Rick - Well, we evolved to tune our immune system in the presence of different infectious organisms and in a way, allergies have resulted because we're no longer in the environment in which we evolved. So I suppose, because allergies are so recent and human population is no longer being selected by natural selection, I don't think we are going to evolve through allergies.

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