I have always thought there is a connection between my quite high intelligence and my bipolar disorder. In fact, I refused medication for many years because in my hypomanic states I was able to do more research, study harder, write better articles, etc. I ended up getting my PhD but being unmedicated and bipolar caught up with me and I ended up with one of my worse suicide attempts causing brain damage. Now I'm above average intelligence and medicated and much happier.