I saw this article in one of my feeds. It says lefties are basically more susceptible to mental problems including schizophrenia, alcoholism and dyslexia. It also states that there are a disproportionate number of athletes who are lefties as well.
I think it has more to do with the left and right side of the brain and which side you are more inclined to. I’m a leftie, so I’m more inclined toward the right side. The right side of the brain is the creative part of the brain, whereas the left side is the more mathematically oriented side. Thats why when you dream, you can’t read anything quite right. You’re using your right side to dream, the left side is idle, so writing looks like gibberish.
Anyway here’s the link: