Before you quit canola et al, I have hard time to believe it is possible to succeed with Iodine for your thyroid health.
I quit years ago, right before it almost ruined my eye sight.
"Canola is like sodium benzoate, as it chokes your cells, ruins your immunity and requires extra "processing" by your body just to filter out the toxic synthetic oil that comes from rapeseed, which Mother Nature never intended as food -- that's why it stinks."