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How would one remove such a thing?
You wouldn’t want to remove it because fear is actually an instinct that can save your life.
But. There is a 44-year-old woman who doesn’t experience fear because she has a rare condition called Urbach–Wiethe disease that has destroyed her amygdala. Haunted houses, where monsters tried to evoke an avoidance reaction, instead evoked curiosity; spiders and snakes didn’t do the trick; and a battery of scary film clips entertained her.
Source: Ultra Facts