My friend needs no convincing about fluoride Grizz. She's active in fighting against fluoridation of water. But it seems she wasn't aware of the Iodine connection. I've given her enough info for now, I think. She is a follower of Mercola and cited his stance on this. I advised her to peruse the dissenting comments on his Iodine article.
Anyway, it's up to her now what she chooses to do.