Jo Cameron gave birth to a child without needing pain killers, it "felt like a tickle". She has unintentionally injured herself due to not being able to feel the pain.
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Scientists are also intrigued by Ms. Cameron’s extraordinarily low anxiety level. ... She cannot recall ever having felt depressed or scared.
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In retrospect, she sees how her genetic disposition may have aided her at work. After years as a primary-school teacher, she retrained to work with people with severe mental disabilities. Erratic, aggressive behavior never riled her, she said.
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But though having this mutation may sound like a dream, there are downsides. One is that she is quite forgetful; prone to losing her keys and her train of thought midsentence. The other is that she’s never felt the “adrenaline rush” that other people talk about, she said.
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