Thanks for all your input guys, but I'd like to renew one question:

Do you think antioxdants can forestall or delay the pathological changes mercury does to our brains ?

sandi - yeah, I take it my logic and reasoning will improve with cheltaion as well, the point is that I think I was born with a pretty smart brain yet never got to use it fully because of life-long mercury poisoning, and now am just struggling to get by and wonder if it's possible at all for it to ever be the same again.