They're More Easily Scared
OK, so being left-handed can be a hazard to your physical and mental health. Can you at least be emotionally well-balanced? Come on, look at what website you're on. Do you really think we have good news for you here? Studies have shown that, if you're left-handed, you're twice as likely to suffer from post-traumatic stress disorder.
They did a study to test left- and right-handers on their tolerance for terrifying shit (because torturing people weaker than themselves seems to be all scientists do these days) and forced a test group to watch a gruesome eight minutes of The Silence of the Lambs. They then measured the emotional response. What they found was that reactions differed depending on which hand the subjects used to cover their eyes during the gory bits. Right-handers were usually able to recount details of the entire scene they just watched, while lefties were more likely to give fragmented accounts.
"And then he was all like, 'I can smell your cunt!' That gets me every time."
More surprising, left-handers actually tended to exhibit subtle symptoms of PTSD. That's right -- a disorder commonly suffered by first responders, combat veterans and escaped victims of serial killers actually began to emerge after watching eight minutes of a movie that isn't even a horror film so much as a taut psychological thriller.
According to the researchers, this is once again because of that left-and-right-brain thing. In left-handers, the right brain tends to be dominant, and you guessed it, that's also the side involved in the shit-your-pants response.