Can your ancestors’ trauma shape your fears
Epigenetics suggests that phobias can be passed down through generations. If your great-great-grandfather was severely traumatized by a snake, the biological marker of that terror can be coded into his DNA and handed right down to you. You aren't intrinsically a coward; you are just actively hallucinating the historical trauma of a 19th-century peasant every time you see a garter snake in the yard.

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