I was born a redhead. I just decided to be blonde for a couple of years. There was no warning on the bottle that I would lose IQ points though.
Did you ever get those IQ points back?
(ducking and running like hell)
Did you get the points back? If not, you could've sued. I think
what happens is the brain cells become poisoned & shut down
till the threat is gone, then (sometimes) they slowly awaken.