thyroid treatment

Thanks.This doctor hasn't explained alot of this to me as of yet, that said ,my biggest concer is that someone said you are supposed to be on special diet to remove iodine from your diet as much as possib;e to help starve your thyroid and she didn't tell me this either but already set up my treatment.I would feel better if things were brought up before hand not when I get there cancer was enough of a surprize for me.